All online calculators
365 days calendar date to Gregorian dateThe calculator converts a date in 365 days calendar (Armenian, Ancient Egyptian) to a date in Gregorian calendar Armenian calendarThis calculator converts a date to an Armenian calendar date and vice versa. Coptic calendarThese calculators convert dates between Gregorian and Coptic calendar systems. Days between dates. The historical version.Calculates number of days between two dates taking in account the date of transition to Gregorian calendar. Ethiopian calendarThe calculator converts an Ethiopian date to Gregorian date and vice versa. Fixed date to Gregorian dateThe calculator evaluates the Gregorian date from the fixed date (integer number passed from the beginning of 1.01.01. Gregorian date to Julian dateThe calculator converts a Gregorian date to a Julian date Gregorian to fixed dateAuxiliary calculator for other date conversion calculators. By Calendrical calculations of Dershowitz and Reingold. ISO calendarThe calculator converts ISO date to Gregorian date and vice versa. Orthodox Easter date calculatorUsing a modification of the Gauss algorithm to calculate Orthodox Easter date Roman calendarThe calculators convert dates between Ancient Roman Calendar and Gregorian calendars Week days calculatorThe calculator counts number of week days between two selected dates.
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Body fat calculator - YMCA formula Body proportionalityCalculates the body proportionality by several body parameters Brunhald formula ideal weight calculator Daily Needs Calorie Rate Figure's graceCalculation of the figure's grace index by the chest, waist, hip and thigh parameters . Ideal weight calculator using Body Mass Index Ideal weight calculator using Paul Broca formulaIdeal weight calculator using Paul Broca formula Novel coronavirus epidemic by countryThe calculator compares the coronavirus disease 2019 pandemic development in different countries aligned by number of days since the epidemic beginning in the particular country. Proportionality of body — McCallum's formula Strength of alcoholic cocktailCalculates volume fraction of alcohol in a beverage made of 3 other beverages. The basal metabolic rateThis calculator computes BMR calories
Glue solution strengthThis online calculator can be used to find out required amount of dry glue and water to get the needed solution strength Ingredients. Proportional quantitiesThis online calculator recalculates quantities of ingredients for given proportions if quantity of one ingredient has changed Race Heat TableThis is generator of heat grids for kart racing. The goal is to let each racer to try each starting position/kart in random order. USA Full Retirement Date CalculatorBased on your birthday, this online calculator calculates your full retirement date, the first month you will be eligible for full Social Security retirement benefits, and the month you can apply for them.
Automated Vigenère cipher decoderThis online calculator provides aid in finding Vigenère cipher key if you can guess part of the encrypted text. It just automates some routine calculations, which you would perform manually otherwise. Base 64 encoding and decodingThe calculators encode string to base64 string and decode back to original string. Special characters (+/) , generally produced by base64 algorithm, can be replaced by the data provided in additional parameter. Binary Coded Decimal (BCD)This online calculator converts decimal number to binary code in BCD notation and vice versa Binary, inverse and complement codesBinary, one's complement (inverse) and two's complement codes (calculator was created by user's request) Caesar cipherCalculator encrypts entered text by using Caesar cipher. Non-alphabetic symbols (digits, whitespaces, etc.) are not transformed. Conversion between any basesThis calculator converts number from one numeral system to another, given both system's bases Conversion from decimal numeral systemThis calculator converts given decimal value to other positional numeral system Conversion of fractional numbers between numeral systemsThis online calculator helps to convert fractional number in one numeral system to fractional number in other numeral system. Count the number of wordsThe calculator counts word number in a given text. It can be used for rough calculation of translation cost. Can be used for word number calculation in software resources. Email extractorThis online calculator parses emails from block of text using regular expression GET request string parserThis parser break GET request string to the parameter-value pairs and decodes URL-encoded sequences, if needed Gray code convertersThese online calculators convert to and from binary reflected Gray code, and can produce table for an n-bit Gray code Huffman codingThis online calculator generates Huffman coding based on a set of symbols and their probabilities LL1 grammar analysis. Yet another top-down parser generator.The calculator checks LL1 grammar correctness, parses a text using the grammar, shows FIRST, FOLLOW and FIRST PLUS sets, parsing tree and gives PLANETCALC parsing code. Playfair cipherThis online calculator encrypts and decrypts a message given Playfair cipher keyword. Non-alphabetic symbols (digits, whitespaces, etc.) are ignored. Regular expression testerThis online calculator allows user to experiment with regular expressions. Shannon EntropyThis online calculator computes Shannon entropy for a given event probability table and for a given message Shannon codingThis online calculator generates Shannon coding based on a set of symbols and their probabilities Shannon-Fano codingThis online calculator generates Shannon-Fano coding based on a set of symbols and their probabilities Simple math in any numeral systemThis online calculator supports simple math (addition, subtraction, division, multiplication and power) for numbers expressed in any numeral system - binary, octal, hexadecimal, from the base 2 to base 36 Substitution Cipher ToolThe tool to encrypt/decrypt messages with simple substitution cipher given as key. It is also useful for manual cryptanalysis of substitution cipher - when you have message written in English alphabet partially decrypted with automatic tool and want to tweak the key. Symbol frequencies tableThis online calculator builds symbol frequency table for a given message VARIANT DATE to datetime stringThis online calculator converts VARIANT DATE (double) value to datetime string. Vigenère cipherCalculator encrypts entered text by using Vigenère cipher. Non-alphabetic symbols (digits, whitespaces, etc.) are not transformed.
Altitude PressureThis calculator uses barometric formula to find out the pressure at the given altitude Arithmetic progressionThis online calculator computes last nth term of arithmetic progression and sum of the members Arithmetic sequence calculator and problems solverThis online calculator solves common arithmetic sequences problems. Barometric leveling Binary numbers calculatorThis calculator supports common mathematical operations over binary numbers Boiling point dependence on the altitude above sea levelThis online calculator finds the water boiling temperature given the atmospheric pressure in millimeters of mercury. Calculation of the volume by weightCalculation of the volume and parameters of regular geometric figure by given mass using density of matter reference book. Calculation of weight by volumeCalculating the weight by the volume of material with matter density reference book Calculation of weight by volumeCalculating the weight by the volume of material with matter density reference book Cartesian and polar two-dimensional coordinate systemsThis online calculator converts polar coordinates to cartesian coordinates and vice versa. Density of oilRecalculation of density of oil for different temperature and pressure values. Formulas are taken from Russia's GOST R 8.610-2004. "State system for ensuring the uniformity of measurements. Density of oil. The tables for recalculation" standard DerivativeIt finds one variable function derivative. Step by step differentiation solution is also provided. Determining air humidity with psychrometric method Direct observation error analisysCalculates error of direct measurements for given measured value series and confidence interval. Geometric sequence calculator and problems solverThis online calculator solves common geometric sequences problems. Hyperbolic functionsCalculation of hyperbolic functions Inverse Hyperbolic FunctionsCalculation of inverse hyperbolic functions of given argument Laminate flooring. The calculation of the number of planksThe calculation of the number of planks requiered Liquid level in the tilted cylinderСalculates the level of the liquid in a tilted cylindrical tank with the tank parameters and the liquid volume. Math equation simplificationSimplifies math equation with single variable (x). In eqation you may also use integer and fractional numerical constants arithmetic operations, trigonometric and hyperbolic functions. Mathematical calculatorMathematical calculator is used for evaluation math expressions with arithmetic operations (+-/*^) and functions: sqrt - square root, exp - exponential function, lb - binary logarithm, lg - decimal logarithm, ln - natural logarithm, sin - sine, cos - cosine, tan - tangent, cot - cotangent, sec - secant, csc - cosecant, arcsin - arcsine, arccos - arccosine, arctan - arctangent, arccot - arccotangent, arcsec - arcsecant, arccosec - arccosecant and others Number of flagstones for pavingThis calculator will help you to estimates number of flagstones needed for paving Number of flagstones to units of area and vice versaThese calculators convert entered number of flagstones to area size and vice versa - calculate number of flagstones needed to cover entered ara size. Metric and imperial units are supported One-variable function graphThis online calculator plots one-variable function graph given function formula and range of variable Parallel and perpendicular lines on a planeThis online calculator checks lines' slopes to see if they are parallel or perpendicular Petroleum product densityPetroleum product density conversion, according to GOST 3900-85 Power to the PeoplePower units converter. Root and powerThis calculator outputs desired root and power of entered number Second, third and other derivativesEvaluates first, second third and other derivatives of a single argument function Solving limit problems using L'Hospital's RuleSolving 0/0 and ∞/∞ limit problems using L'Hospital's Rule. Tank volumeCalculator computes tank volume given its length, diameter and walls depth. Created by user's request. Tilted cylindrical tank volumeCalculates volume of cylindrical tank tilted at an angle. To perform calculation you must provide the tank size, angle and liquid level. Usable volume of tankThis calculator find usable volume of tank, taking into account wall thickness Values of one-variable functionThis online calculator calculates values of one-variable function given function formula and set of variable values Volume of the cylinder segmentCalculates volume of the cylinder segment
Accretion and discounting of annuity payments Bank card number validationThe calculator checks a bank card number using Luhn algorithm, it also determines the card issuer according to Issuers handbook. Calculation of payments on corporate property taxCalculation of the tax amount and the amount of advance tax payments in accordance with Chapter 30 of the Russian Federation Tax Code Commission calculatorThis online calculator finds the commission from the sale price and the commission rate, the sale price from the commission and the commission rate, and the commission rate from the sale price and the commission Compound interestThis calculator computes compound interest Compound interest. Arbitrary paymentCompound interest calculator with the possibilityto set all the parameters of the compound interest formula Discount calculatorThis online calculator finds the discount from the sale price and the usual price, the sale price from the discount and the usual price and the usual price from the sale price and the discount Family budget plannerThe calculator helps to plan personal finances. Loan payment example Mortgage calculator Nominal interest rates сomparisonСalculation of the effective interest rates for a given nominals PercentageThis online calculator gives the percentage of the value. It also calculates the percentage of the sum (e.g. the income tax of the net salary) and the percentage of the difference (e.g. VAT of the gross amount). Price based on running meterThis online calculator calculates the price of certain area based on price of running or linear meter Progressive taxCalculates progressive tax according to tax rate table. Real interest rate using Fisher equationThis online calculator calculates real interest rate from nominal interest rate with adjustment for inflation using Fisher equation Simple InterestCalculates simple interest The calculation of amortization for tax purposesThe methods and procedures for calculating amortization for tax purposes in accordance with Article 259 of the Tax Code, taking into account the changes to the federal law of 27 July 2006 N 144-FZ. When it becomes profitable to pay the tax as a sole proprietor in Russia?The calculator allows you to compare the taxes paid by an sole proprietor in the simplified taxation system and the individual.
Beaufort scaleConversion between wind speed measurement units including Beaufort numbers, km/h, m/s, mph, fps. City objects observationThe calculator helps to distinguish observed city objects. Compass PointsThe calculator gives name of compass point by direction angle in degrees. Compass point between two locationsGiven coordinates of two locations in decimal degrees, this calculator displays constant azimuth, distance and compass points for different compass roses. Compass, magnetic and true course.Calculates true, magnetic and compass direction(course, bearing) by given direction, magnetic declination and deviation. Course angle and the distance between the two points on loxodrome (rhumb line).Calculation of a distance on loxodrome (rhumb line) and course angle (azimuth) between two points with a given geographical coordinates. Course angles and distance between the two point on the orthodrome(great circle)Calculates the distance between two point of the Earth specified geodesic (geographical) coordinates along the shortest path - the great circle (orthodrome). Calculates the initial and final course angles and azimuth at intermediate points between the two given. Distance across the surface vs distance through the EarthThis calculator calculates distance across the surface of the Earth and distance through the Earth for given two points, then compares them. Distance calculatorCalculates distance between two geographic coordinates using haversine formula. Distance through the EarthThis calculator calculates the distance from one point on the Earth to another point, going through the Earth, instead of going across the surface. Earth Radius by Latitude (WGS 84)This online calculator calculates Earth radius at given latitude using WGS 84 reference ellipsoid Flag semaphore signalsThe calculator converts english phrase to the flag semaphore signal sequence. Nautical measurement unitsNautical mile, sea mile, cable Points of the compassThis online calculator outputs compass point given direction angle in degrees. Different compass roses (4, 8, 16, 32, 128-wind compass roses) are supported. Prospect distance from the ground and line of sight distance between two observersCalculates the prospect distance from height at observer and line of sight distance between two observers. Tidal gate calculator (Rule of twelfths)This calculator calculates tidal gates using the rule of twelfths, estimating the height of the tide at any time, given only the time and height of high and low water.
Analytical performance indicatorsCalculation of derived analytical indicators of time series Binomial distribution, probability density function, cumulative distribution function, mean and varianceThis calculator calculates probability density function, cumulative distribution function, mean and variance of a binomial distribution for given n and p Chande momentum oscillator indicatorDescription of Chande momentum oscillator indicator, drawing a graph on candles Count to ProbabilityThis online calculator takes a list of events along with number of times the particular event occured and calculates the probability (and log probability) of each event by dividing event count to the total number of events. Cuba World Development Indicators 2016 - in memory of Fidel CastroThis calculator provides access to 752 world development indicators for Cuba imported from World Bank data at 2016. In memory of Fidel Castro. Double exponential smoothingDescription and example of the double exponential smoothing Estimated Mean of a PopulationThis online calculator allows you to estimate mean of a population using given sample Events timelineThis online calculator analyzes and summarizes sequence of events on a timeline. It calculates days passed between events, as well as statistical data, e.g. a mean time between events, a variance and a deviation Exponential Moving AverageExponential Moving Average calculation by candles Exponential smoothingExponential smoothing theory Geometric Distribution. Probability density function, cumulative distribution function, mean and varianceThis calculator calculates geometric distribution pdf, cdf, mean and variance for given parameters HistogramHistogram generation according to input data. The number of groups is determined by the Sturgess formula, other formulas or set manually Histogram group numberSturges formula and other methods of determining the number of groups in histogram generation Hypergeometric Distribution. Probability density function, cumulative distribution function, mean and varianceThis calculator calculates hypergeometric distribution pdf, cdf, mean and variance for given parameters Indicators of variationsCalculation of variation - the coefficient of variation, dispersion, mean square deviation, etc. Log-normal distributionIt calculates the probability density function (PDF) and cumulative distribution function (CDF) of long-normal distribution by a given mean and variance. Mann-Whitney TestThis online calculator performs the Mann–Whitney U test (also called the Mann–Whitney–Wilcoxon (MWW), Wilcoxon rank-sum test, or Wilcoxon–Mann–Whitney test). Negative Binomial Distribution. Probability density function, cumulative distribution function, mean and varianceThis calculator calculates negative binomial distribution pdf, cdf, mean and variance for given parameters Paired Sample t-TestThis online calculator performs t-Test for the Significance of the Difference between the Means of Two Correlated Samples Pearson correlation coefficientThe calculation of the correlation coefficient of two random variables Poisson Distribution. Probability density function, cumulative distribution function, mean and varianceThis calculator calculates poisson distribution pdf, cdf, mean and variance for given parameters Seasonal Indices for Quarterly DataThis online calculator calculates seasonal indices based on quarterly data using the method of simple averages Seasonal fluctuations. Seasonal indices. Method of simple averagesThe study of periodic (seasonal) fluctuations. Calculation of average seasonal indices by the method of simple averages. Spearman's correlation coefficientCalculates Spearman's rank correlation coefficient Text fitnessThis online calculator computes text "fitness". That is, how similar the given text to other texts written in English language. Text fitness (version 2)This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses frequencies of unigrams, bigrams and trigrams to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better. Text fitness (version 3)This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses logarithms of probabilites with normalization to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better. Triple exponential smoothingDescription and examples of triple exponential smoothing Two sample t-TestThe calculator to perform t-Test for the Significance of the Difference between the Means of Two Independent Samples Weighted moving averageWeighted moving average calculation by candles Z-score from P-valueThis online calculator calculates z score from p value
Number of agents in call centerThe calculator works out number of call center agents using Erlang C formula for given call load and service level. PBX channel number calculationCalculates number of PBX telecommunications channels for given traffic load using Erlang B and Engset algorithms Telecommunications traffic, ErlangThe calculator gives telecom traffic in Erlang for given time span and total call duration. VOIP call bandwidthThe calculator works out bandwidth required to handle given number of VOIP calls with given audio codec.
Area expression with different unitsCalculator expresses the given area through the different units of area measurement. Conversion between imperial and metric units of areaThese calculators convert imperial to metric and metric to imperial units of square Conversion of decimal number to other notationsThis calculator converts decimal number to binary, hexadecimal and octal notations Conversion of pounds into inchesConversion of old pounds artillery caliber into more modern inches and millimeters Converting degrees to radiansConverts radians to degrees, minutes and seconds Digital image size in pixels and photo print sizeThis article is about relation between image size in pixels and photographic print size. First, it recommends photographic print size for given digital image dimensions in pixels. Second, it finds resulting pixels per inch value for printed digital image with known linear and pixel dimensions. Display aspect ratio and dimensionsThis online calculator finds screen dimensions - height, width and area, given the diagonal value and aspect ratio. Expressing length through different unitsCalculator expresses a given length through the different units. Imperial to Metric and Metric to Imperial measures of length converter Math operations on degreesThis online calculator supports simple mathematical operations, addition/subtraction/multiplication/division, on degrees Meters per second and kilometers per hourThis simple calculator convert meters per second to kilometers per hour and vice versa Pressure units converterCalculator which converts units of pressure
Shadow lengthGives a vertical object shadow length for given coordinates and time. Also calculates shadow growth during whole day. Sunrise and sunset timeThis online calculator is intended for sunrise and sunset time calculation for given place and date. The calculator algorithm is obtained from the great book of Oliver Montenbruck and Thomas Pfleger "Astronomy on the Personal Computer".
ABV (Alcohol by volume)This online calculator estimates alcohol by volume (abv) based on original and final specific gravity values. Acid-base titration curvesThis online calculator build theoretical titration curves for monoprotic acids and bases Alcohol amount in the aqueous alcohol solutionDefines the mass and volume concentration of ethanol in the solution of two liquids with different levels of alcohol. CaCl2 ppm to chlorides WPS ppm converterThis online calculator converts given CaCl2 ppm concentration into chlorides water phase salinity ppm concentration Chemical equation balancerThis online calculator balances equations of chemical reactions. Concentration of analyte with uncertaintly analysis for replicate titrationsThis online calculator calculates the molarity of a solution from replicate titrations data. It also performs uncertainty analysis and displays result with the uncertainty. Convert grams to liters and liters to gramsThis online calculator converts grams to liters and liters to grams given a gas formula. It uses molar volume of a gas at STP (standard temperature and pressure) Convert moles to grams and grams to moles.This online calculator converts to moles given grams and converts to grams given moles Convert moles to liters and liters to molesThis online calculator converts to moles given liters of a gas at STP and converts to liters of a gas at STP given moles Molar mass of the substanceCalculates the molar mass of the substance using atomic mass units from the periodic table Molar mass of the substanceCalculates the molar mass of the substance using atomic mass units from the periodic table Molar volumeThis calculator calculates molar volume of an ideal gas at different conditions (temperature and pressure) Molarity calculatorThis online calculator can calculate the molar concentration of a solute in a solution or mass of a solute in a solution with a specific molar concentration. Raoult's Second law and the freezing temperature.Calculation of boiling point and crystallization (freezing) of non-electrolyte solutions.
Continued fractionThe calculator represents a fraction as continued fraction Egyptian fraction to rational numberThe calculator converts an Egyptian fraction to the rational number. Egyptian fraction must be entered as integer part and the fraction denominators separated by space. Egyptian fractionsThe calculator converts decimal number or simple fraction to Egyptian fraction. Modular arithmeticThe calculator performs arithmetic operations modulo p.
Distinct degree factorizationThe calculator finds distinct degree factors of a polynomial in finite field Partial fraction decompositionThe calculator decomposes a polynomial fraction to several fractions with a simpler denominator. Polynomial Greatest Common DivisorThe calculator gives the greatest common divisor (GCD) of two input polynomials. Polynomial Taylor ShiftThe calculator evaluates Taylor shift of the given polynomial using Shaw and Traub algorithm. Polynomial factorizationThe calculator finds all factors of a polynomial with rational coefficients Polynomial factorization modulo pThe calculator finds polynomial factors modulo p using Elwyn Berlekamp algorithm Polynomial factorizaton in finite fieldThe calculator finds factors of a polynomial using Cantor-Zassenhaus algorithm Polynomial factors as formulaThis supplementary calculator is intended for representation input univariate polynomial factors as math formula. Polynomial fast exponentiation in finite fieldThe calculator raises a polynomial to a power in finite field. Square-free polynomial factorization in finite fieldThe calculator finds all square factors of polynomial in finite field. Synthetic divisionA simple method of polynomial division.
2D Bin Packing Problem SolverThis online calculator tries to solve an offline two-dimensional (2D) bin packing problem using Maximal Rectangles heuristic algorithm Bell triangleThis online calculator constructs the Bell triangle for the given number of rows. Bin packing problemCalculator solves bin packing problem by different heuristic algorithms. Created at the request of the user. Bin packing problem 2Calculator solves bin packing problem with different heuristic algorithms and gives you a best. Created at the user's request. Combination By Lexicographical IndexThis online calculator finds combination by index in lexicographically ordered set. Combinations generatorThis online calculator generates all possible combinations of items from different sets/lists Combinations of teamsThis online calculator creates all combinations of teams, so that everyone can play with, and against everyone. It accepts number of players and size of teams, and then generates a list of all teams with all combinations of players. Combinatorial number systemThis online calculator represents given natural number as sequences of k-combinations, referred as the combinatorial number system of degree k (for some positive integer k), aka combinadics Combinatorics. Combinations, arrangements and permutationsThis calculator calculates number of combinations, arrangements and permutations for given n and m Combinatorics. Generator of combinations.Combinatorics. Generator of combinations of m from n. Combinatorics. Permutation generator from N to M with repetitions.Combinatorics. Permutation generator from N to M with repetitions. Combinatorics. Permutation generator from N to M without repetitions.Combinatorics. Permutation generator from N to M without repetitions Factoring calculatorThis calculator generates all pairs of factors for given integer. Generator of combinations which satisfy a conditionFor elements with weights this calculator can filter out all combinations where total weight is under the specified limit. Making up words out of the syllablesCalculator sorts out all combinations of syllables to make words. English homework helper. Restricted Growth Strings GeneratorThis online calculator generates restricted growth strings for the given size Seating chartThis calculator tries to find seating chart combinations taking into account preferences of students. Set partitions generatorThis online calculator generates all possible partitions of a given set. Stirling numbers of the second kindThis online calculator outputs Stirling numbers of the second kind for the given n Team combinations with conditions like team roles and limitsThis online calculator generates all possible combinations of 11 from 22 using limiting conditions like team roles and limits Tips and tricks #11: Dynamic table columnsThis article describes how to work with dynamic columns in your calculator Tournament tableThe calculator performs the participant placement with two following conditions: 1) Each participant must start from each starting position. 2) Each participant must encounter every other participant.
Characteristic polynomialThis online calculator calculates coefficients of characteristic polynomial of a square matrix using Faddeev–LeVerrier algorithm Cramer's RuleThis online calculator solves system of linear equations using Cramer's rule and shows detailed steps of the solution Determinant of a matrixThis online calculator computes determinant of a matrix, using it's definition Extended polynomial Greatest Common Divisor in finite fieldThe calculator computes extended greatest common divisor of two polynomials in finite field Gaussian elimination in complex numbersSolve complex coefficient linear equation system. Inverse matrix calculatorThis online calculator finds inverse matrix via adjugate matrix Matrix MultiplicationMatrix Multiplication Matrix RankThis online calculator determines the rank of a given matrix Matrix TransposeMatrix Transpose Matrix triangulationMatrix triangulation with Gauss and Bareiss methods Modular inverse of a matrixThis calculator finds modular inverse of a matrix using adjugate matrix and modular multiplicative inverse Polynomial addition /subtractionThe calculator performs polynomial addition or subtraction Polynomial mathThe calculator evaluates a polynomial expression. The expression contains polynomials and operations +,-,/,*, mod- division remainder, gcd - greatest common divisior, egcda, egcdb, lc, deg, pp, content, monic functions. Reduced Row Echelon Form of a Matrix (RREF) CalculatorThis online calculator reduces given matrix to a reduced row echelon form (rref) or row canonical form and shows the process step by step. ResultantThe calculator gives the resultant of two univariate polynomials. It also displays Silvester matrix. Solution of nonhomogeneous system of linear equations using matrix inverseSolution of nonhomogeneous system of linear equations using matrix inverse The discriminantThis online calculator calculates the discriminant of the quadratic polynomial as well as higher degree polynomials.
Area de la Sombra de un ObjetoEl área de la sombra se refiere a la de un objeto cuadrado o rectangular. Bisection methodThe bisection method in mathematics is a root-finding method that repeatedly bisects an interval and then selects a subinterval in which a root must lie for further processing. The method is also called the interval halving method. CollinearityThis online calculator finds if points are collinear given their coordinates Completing the squareThis online calculator allows you to use completing the square technique to complete the square. Complex numbersThe calculator displays complex number and its conjugate on the complex plane, evaluate complex number absolute value and principal value of the argument . It also demonstrates elementary operations on complex numbers. Complex polynomial value calculationThe calculator evaluates polynomial value. The polynomial coefficients can be either real or complex. Determinant by Gaussian eliminationFinding matrix determinant using Gaussian elimination in complex, rational or real numbers. Determinant of 3x3 matricesThis calculator calculates the determinant of 3x3 matrices Eigenvalue calculatorThis online calculator computes the eigenvalues of a square matrix up to 4th degree by solving the characteristic equation. Eigenvector calculatorThis online calculator computes the eigenvectors of a square matrix up to 4th degree. Evaluating expressionsThis online calculator substitutes a specific value for each variable, and performs the operations, evaluating the given expression. FOIL CalculatorThis online calculator shows steps to multiply two binomials using the FOIL method (or the FOIL mnemonic) Factoring trinomialsThis is factoring trinomials calculator, in other words, the calculator which can factor trinomials given the three terms of the trinomial. False position methodFalse position method - is a root-finding algorithm that uses a succession of roots of secant lines combined with bisection method to approximate a root of a function f. Geometric progressionThis calculator computes n-th term and sum of geometric progression Geometric progression. The common ratio and the first termFinding the common ratio and the first term the geometric progression for two adjacent terms. Hill cipherThis calculator uses Hill cipher to encrypt/decrypt a block of text Integer factorization. Trial divisionInteger factorization using trial division algorithm. Linear approximationThis online calculator derives the formula for the linear approximation of a function near the given point, calculates approximated value and plots both the function and its approximation on the graph Modular Multiplicative InverseThis calculator calculates modular multiplicative inverse of an given integer a modulo m Newton's methodThis online calculator implements Newton's method (also known as the Newton–Raphson method) for finding the roots (or zeroes) of a real-valued function. Polynomial divisionThis calculator divides one polynomial by another polynomial. Polynomial multiplicationThis calculator multiplies two univariate polynomials. Polynomial power expansionThe calculator expands n-th power of a given polynomial. Polynomial root isolationThe calculators isolates real roots of the input univariate polynomial using Sturm and VAS-CF methods. Polynomial rootsThe calculator solves polynomial roots of any degree. For small degree polynomials analytic methods are applied, for 5-degree or higher the polynomial roots are estimated by numerical method. Quartic equation solutionThis calculator produces quartic equation solution using resolvent cubic. Secant methodThe secant method is a root-finding algorithm that uses a succession of roots of secant lines to better approximate a root of a function f. Solution of a system of 3 linear equationsSolution of a system of 3 linear equations with 3 variables Solution of buckets and tank problemThis online calculator find a solution to the question how to fill tank with certain amount of water using two buckets of different size Solution of quadratic equationSolution of quadratic equation, including complex roots Solving a system of equations of first degree with two unknownsThis calculator solves a system of equations of first degree with two unknowns. Squarefree polynomial factorizationThe calculator extracts square factors from the input polynomial. Stirling's approximation of factorialOnline calculator computes Stirling's approximation of factorial of given positive integer (up to 170!) The rational number as the fractionThis online calculator writes the rational number as the fraction (the ratio of two integers), using the formula of infinite geometric sequence nth root algorithmThis online calculator implements nth root algorithm to find the principal nth root of a positive real number.
3d coordinate systemsTransforms 3d coordinate from / to Cartesian, Cylindrical and Spherical coordinate systems. Altitude of a triangleThis online calculator computes the length of a altitude of a triangle, given the lengths of edges of a triangle. Angle between two vectorsThis online calculator finds the angle between two vectors Angle bisector of a triangleThis online calculator computes length of angle bisector given the lengths of triangle edges Angular size, linear size and distanceThese calculators computes value of angular size or linear size or distance from the other two's Arc length calculatorThis univeral online calculator can find arc length of circular segment by radius and angle, by chord and height and by radius and height. Area of a Rectangle by the length of one side and the diagonalThis online calculator finds the area of a rectangle from the length of one side and the diagonal. Area of a convex quadrilateral. Example of creating a calculator.This online calculator calculates area of a convex quadrilateral given diagonal values and value of angle between them. Article also describes the process of creating a calculator. Area of a quadrilateralThis article lists several calculators for area of a quadrilateral Area of a triangleThis is univeral online calculator for the area of a triangle which uses different methods to find the area of a triangle, depending on your knowledge of the triangle. Area of rectangle by coordinatesThis online calculator calculates area of convex quadrilateral (rectangles too) given coordinates of four vertices (corners) Area of triangle by coordinatesThis calculator determines area of triangle, using its vertex coordinates in cartesian coordinate system Ball radius calculated by volume Calculate radius from areaThis online calculator calculates a radius of a circle from the given area of a circle Calculator of area of a triangle using Hero's formula Circle formulaeCircle formulae Circular sectorCalculates area, arc length, perimeter and center of mass of circular sector Circular segmentCan calculate area, arc length,chord length, height and perimeter of circular segment by radius and angle. Circumcircle of a triangleThis online calculator determines the radius and area of the circumcircle of a triangle given the three sides Collinearity of vectors in 2d spaceThis online calculator determines if 2d space vectors are collinear Cone Cone developmentCalculator of right circular cone / truncated right circular cone development Counting pipes from the end faceThe approach to the calculation of the number of nested circles of smaller radius at a known length of the describing circle of a larger radius. Created by user request Cross product calculatorThis online calculator computes the cross product (or vector product) and visualizes the result in a cartesian coordinate system. Cube Cylinder Cylindrical tank volumeCylindrical tank volume Distance and midpoint between two pointsThis online calculator find distance and midpoint between two points in cartesian coordinates. Dot productThis online calculator calculates the dot product of two vectors EllipsoidCalculates ellipsoid and spheroid volume and surface area. Equation of a circle passing through 3 given pointsThis online calculator finds equation of a circle passing through 3 given points Equation of a line passing through two points in 3dThis online calculator finds equation of a line in parametrical and symmetrical forms given coordinates of two points on the line Equation of a plane passing through three pointsThis online calculator calculates the general form of the equation of a plane passing through three points Equations of a circle with given center and radius in different formsThis online calculator displays equations of a circle in standard form, in parametric form and in general form given center and radius of a circle Equilateral triangleThis online calculator calculates characteristics of the equilateral triangle: the length of the sides, the area, the perimeter, the radius of the circumscribed circle, the radius of the inscribed circle, the altitude (height) from single known value Function graphsThe calculator plots several function graphs on the single coordinate plane. Hip roof calculatorThis calculator will help you estimate hip roof parameters, including rafters and roof area How many circles of radius r fit in bigger circle of radius RThis calculator estimates how many circles of radius r can be placed inside another circle of radius R. Incircle of a triangleThis online calculator determines the radius and area of the incircle of a triangle given the three sides Intersection of two circlesThis online calculator finds the intersection points of two circles given the center point and radius of each circle. It also plots them on the graph. Inverse trigonometric functionsThis calculator determines values of inverse trigonometric functions (arcsine, arccosine, arctangent, arccotangent, arcsecant, arccosecant) and outputs it with different measurement units (degrees, radians, minutes, etc) Involute of an angleInvolute of an angle calculator and finding an angle by the given involute. Is a point in a triangle?The calculator determines if an arbitrary point lies inside 2D triangle. The triangle is defined by 3 cartesian coordinate pairs. Isometric projection of a vectorThis online calculator draws isometric projection of a vector, giving its coordinates in 3D space. Lengths of triangle sides given one side and two anglesThis online calculator determines lengths of triangle sides given one side and two angles Level of liquid in the cylindrical tank, AKA Quarter-Tank ProblemThis online calculator finds the height above the bottom of a horizontal cylinder (such as a cylindrical gas tank) to which the it must be filled for it to be full at specified percentage (for example, one quarter full amounts) Magnitude of a VectorThis online calculator calculates the magnitude of a vector Median of a triangleThis online calculator computes median of a triange given triangle sides Pipe cold bending. Flexure depth with main shaft.Calculates the section flexure depth with pipe bender or bending machine to obtain given parameters. Polygon areaOnline calculator which calculates area of a polygon given lengths of polygon sides and diagonals which split polygon to nonoverlapping triangles Pythagorean theorem calculatorCalculates the side length of a right triangle from two other sides using Pythagorean theorem. Created by user's request Rectangle area calculation by perimeterRectangle area calculation with known perimeter and aspect ratio Rectangle intersectionThis online calculator displays result of intersection of two rectangles Regular polygon area from circumcircleCalculates the area of the circumcircle and of the regular polygon from radius of circumcircle and number of sides Regular polygon, number of sides and length of side from incircle and circumcircle radiiThis online calculator finds number of sides and length of side of regular polygon given the radii of incircle and circumcircle Regular polygon. Incircle and circumcircleThis online calculator determines parameters of circumcircle and incircle of a regular polygon Side length of a triangleThis calculator computes side length of a triangle given two sides and angle between them (law of cosines) Side length of the regular polygonCalculates the side length of the regular polygon circumscribed or inscribed to a circle. Created by user's request Side of regular polygon from polygon areaCalculates the side length of regular polygon given the area of the regular polygon and number of sides Sine waveConstruction of a sine wave with the user's parameters Sphere Spherical cap and spherical segmentThis calculator computes volume and surface area of spherical cap and spherical segment Spherical sectorCalculates surface area and volume of Spherical sector by radius and height The diagonals of a parallelogramCalculator computes the diagonals of a parallelogram and adjancent angles from side lengths and angle. Total squareThis calculator calculates total square as sum of squares of entered rectangles Total volumeThis calculator calculates total volume as sum of volumes of entered rectangular parallelepipeds. Triangle angles for given triangle sidesThis calculator computes triangle angles for given triangle sides using cosine law Trigonometric functionsThis online calculator computes the values of elementary trigonometric functions, such as sin, cos, tg, ctg, sec, cosec for an angle, which can be set in degrees, radians, or grads. Two argument arc tangentThe calculator gives an angle between positive axis x and the ray to the given point from point 0. The result corresponds to atan2 function, implemented in many computer languages and math libraries. Vector Addition CalculatorThis online calculator performs vector addition and displays vectors and vector sum graphically. Volume of a sphereThis online calculator can find volume of a sphere by radius, and radius by volume of a sphere Volume of liquid in a tilted tank with hemispherical headsCalculates volume of liquid in an inclined cylindrical tank with hemispherical ends. Volume of the hemisphere cut at an angleVolume of hemisphere asymmetrically cut by a flat plane under a given angle.
The limit of the function at the given pointThis calculator calculates the limit of the function at a given point numerically. It calculates the limit of the function well as x approaches to the specified value. It's not suitable for calculating the limits when x goes to infinity.
AntilogarithmAntilogarithm calculator Bayes’ theoremThis online calculator calculates posterior probabilities according to Bayes’ theorem. Bernoulli trials tableThis online calculator calculates probability of k success outcomes in n Bernoulli trials with given success event probability for each k from zero to n. Bézout coefficientsThis online calculator computes Bézout's coefficients for two given integers and represented them in the general form Centered Moving AverageThis online calculator calculates centered moving average, which is used instead of moving average then number of periods is even Complex fractionThis online calculator evaluates arithmetic expressions with common or complex fractions. Covariance CalculatorThis online calculator computes covariance between two discrete random variables Cryptarithmetic puzzle solverThis calculator is a solver of cryptarithmetic puzzles. Cryptarithmetic puzzle is a number puzzle in which a group of arithmetical operations has some or all of its digits replaced by letters or symbols, and where the original digits must be found. In such a puzzle, each letter represents a unique digit. Cubic equationSolution of cubic equation using Vieta's formulae. Created by user request Egyptian numbersThe calculator displays a number in ancient Egypt hieroglyphs. Multiple numbers are recognised as Egyptian fraction. Euler methodThis online calculator implements Euler's method, which is a first order numerical method to solve first degree differential equation with a given initial value. Explicit Runge–Kutta methodsThis online calculator implements several explicit Runge-Kutta methods so you can compare how they solve first degree differential equation with a given initial value. Extended Euclidean algorithmThis calculator implements Extended Euclidean algorithm, which computes, besides the greatest common divisor of integers a and b, the coefficients of Bézout's identity FactorialThis online calculator calculates factorial of a positive integer. Practically unlimited positive integer. In fact, it is limited only by the time you are willing to wait until calculation completes. I was patient enough to wait for 100000! Fixed-point iteration methodThis online calculator computes fixed points of iterated functions using fixed-point iteration method (method of successive approximations) Fraction SimplifierThis online calculator simplify the entered fraction using the greatest common factor (GCF) Fraction to Decimal and Decimal to Fraction converterThis online calculator determines the decimal value for the entered fraction and fraction value for the entered decimal Fraction to Percent and Percent to Fraction converterThis online calculator determines the percent value for the entered fraction and the fraction value for the entered percent Function approximation with regression analysisThis online calculator uses several simple regression models for approximation of unknown function given by set of data points. Gamma functionCalculation of the Gamma function using Lanczos approximation Gaps and missing numbers finderThis online calculator helps you find gaps and missing numbers in a sequence of numbers. Gaussian Method for system of linear equations with any number of variables.The calculator solves the system of linear equations using Gaussian Method. Gaussian eliminationThe calculator solves the systems of linear equations using row reduction (Gaussian elimination) algorithm. The calculator produces step by step solution description. Gaussian elimination with fractionsThis online calculator solves systems of linear equations using row reduction (Gaussian elimination) while retaining fractions on all calculation stages. At the end, it returns the results in two forms - as a floating point numbers and as a fractions (with numerator and denominator) Golden ratioThis calculator determines proportions according to golden ratio Lagged scatterplotThis online calculator builds scatterplot of the time series against itself offset in time Least Common Denominator for several fractionsLeast Common Denominator for several fractions Levenshtein DistanceOnline calculator for measuring Levenshtein distance between two words Line equation from two pointsThis online calculator finds the equation of a line given two points it passes through, in slope-intercept and parametric forms Linear Diophantine equationsThis calculator solves linear diophantine equations. LogarithmThis online calculator produces the logarithm of a given number with a given base. It computes also the natural logarithm and the common logarithm (decimal logarithm). Luhn algorithmCalculates digit sequence checksum using Luhn algorithm (mod 10), calculates validation digit (the digit to be appended to the digit sequence to make whole sequence checksum equal to zero). Math equation syntaxMath equation samples. Math worksheets generator for elementary schoolRandom worksheets, which are generated automatically from user parameters. Mathematical competition tasksCalculator solving some mathematical competition task Mean, variance and standard deviation of discrete random variableThis online calculator calculates mean, variance and standard deviation of random variable entered in the form of value-probability table Midpoint methodThis online calculator implements explicit midpoint method AKA modified Euler method, which is a second order numerical method to solve first degree differential equation with a given initial value. Mod calculatorThis online calculator performs modulo operation on integers and on doubles as well (because it just returns reminder of division) Multiplication in columnsCalculator shows results of multiplying in columns, can be used to check answers Noisy function generatorThis online calculator takes function, calculates its values for given range and then adds some random noise to distort original values. Normal distributionPlots the CDF and PDF graphs for normal distribution with given mean and variance. Number approximation as a sum of unit fractionsThe calculator approximates a fractional number with a sum of unit fractions (a unit fraction numerator is one). The unit fraction denominator is a number which is less than the base times the base in integer non negative power. Numeric complementsThis online calculator calculates radix complement and diminished radix complement for given number and radix. Numerical integrationTo calculate definite integral by the rectangle method, trapezoid method, Simpson method or other Newton-Cotes quadrature methods. P-valueThis online calculator calculates p-value for one sided and two sided tests given the z-score Probability Urn simulatorThis calculator simulates urn or box with colored balls often used for probability problems and can calculate probabilities of different events. Probability of given number success events in several Bernoulli trialsGives probability of k success outcomes in n Bernoulli trials with given success event probability. ProportionThis online calculator finds unknown member of proportion. Created by user's request Quick Sum CalculatorThis online calculator sums up entered integer numbers. Any symbol what is not a digit, for example, a space, a comma, a semicolon, etc, serves as a separator. It is useful when you need to sum up several numbers but do not have speadsheet program at hand. Random combination of numbers from specified rangeThis calculator randomly picks several numbers from specified range. Runge–Kutta methodThis online calculator implements Runge-Kutta method, which is a fourth-order numerical method to solve first degree differential equation with a given initial value. Student t-distributionCalculates cumulative distribution function value and probability density function value for Student t-distribution. Quantile calculator evaluates Student quantiles for given probability and specified number of degrees of freedom. Sum of Partial Sums of Arithmetic SequenceThis online calculator calculates partial sums of arithmetic sequence and displays sum of partial sums. Sum of Partial Sums of Geometric SequenceThis online calculator calculates partial sums of geometric sequence and displays sum of partial sums. Surface area of a cube The Greatest Common Factor of several numbersThis online calculator finds the greatest common factor of several numbers (two or more). The greatest common divisor and the least common multiple of two integersThis calculator finds the greatest common divisor (GCD) and the least common multiple (LCM) of two integers The greatest common divisor of two integersThis calculator determines the greatest common divisor of two integers using Euclidean algorithm Time Series DecompositionThis online calculator decomposes time series by extracting seasonality and trend from data Tips and tricks #12: Long (infinite) calculationsThis article describes how to perform long or infinite calculations while allowing user to stop them Tips and tricks #8: How to reuse existing calculatorThis article describes process of reusing another calculator's logic (algorithm) in your calculator. Tips and tricks #9: Big numbersHow to use big number input and PCR library. TorusVolume and surface area of torus. Volume of geometric shapesCalculates volume of geometric shapes: cube, prism, pyramid, frustum, cone, cylinder, sphere, ellipsoid. Z-score / Standard scoreThis online calculator computes the standard score of a raw score from the given mean of the population and the standard deviation of the population. Сomputer algebraDerives a formula from input formulas and input data to calculate remained parameters
Acceleration of gravityAcceleration of gravity calculation on the surface of a planet. It's possible to calculate the acceleration above the surface by setting the sea level. But it won't be possible under the surface - this is a wrong formula. Angular velocity and linear velocityThis online calculator converts angular velocity to linear velocity for given radius Apparent temperatureThis online calculator computes apparent temperature, taking into consideration wind speed and relative air humidity. It uses Australian Bureau of Meteorology formula Battery discharge time depending on loadThis article contains online calculators which can calculate discharge times for specified discharge current using battery capacity, the capacity rating (i.e. 20 hour rating, 100 hour rating etc) and Peukert's exponent. Capacitor in Direct Current CircuitThese online calculators computes various parameters for charging and discharging the capacitor with the resistor Celsius to Fahrenheit calculator explained Clapeyron-Mendeleev equation. The relationship between the number of moles of gas, the temperature, volume and pressure.Clapeyron-Mendeleev equation. The relationship between the number of moles of gas, the temperature, volume and pressure. Complementary colorThis calculator shows complementary colors for entered colors Coulomb's lawThis online calculator calculates unknown (whether force, charge or distance) using known values using Coulomb's law scalar formula. It can be used to solve physics problems. Dew pointThis calculator determines dew point from given temperature and relative humidity of air Doppler Effect in soundCalculation of frequency and wavelength change for a moving source Electricity, Work, and PowerThis online calculator can help you solve the problems on work done by the current and electric power. It can calculate current, voltage, resistance, work, power and time depending on what variables are known and what are unknown Energy measurement unitsEnergy unit converter (joules, kilowatt-hour, kilogram force per meter, horsepower per hour, kilocalories) Free fall. Distance passed task.Solution of the falling body and distance passed tasks. Humidification loadsThis online calculator answers question "how to choose" humidifier, by calculating humidification requirements given initial and target relative humidity and building parameters Hydrostatic pressureThis online calculator can solve hydrostatic pressure problems by finding unknown value in hydrostatic equation. Kinematic Equations for Uniform AccelerationThis calculator will help you to solve uniform acceleration problems using kinematic equations Kinematics. Throwing body up problemKinematics problem from the Svetozarov's book for MEPI matriculates Normal forceThis online calculator calculates strength of the normal force from the mass of the object, the gravitational field strength and the angle of the inclined surface measured from the horizontal. Ohm's lawThis calculator determines current by voltage and resistance using ohm law Power into Torque and vise versaThis online calculator turns power into torque and vise versa Pressure over a surfaceThis online calculator computes pressure, cause by given mass over given surface in gravity field. Result is displayed using different units of pressure ProjectionCalculation of unknown parameters of projection using known parameters. Parameters are duration, maximum height, distance, initial velocity and angle. Quantity of heatThis calculator can find missing values in the relationship between heat and temperature: heat added or removed, specific heat, mass, initial temperature and final temperature Relative humidity to absolute humidity and vise versa calculatorsFirst calculator converts relative humidity to absolute humidity for given temperature and barometric pressure. Second calculator converts absolute humidity to relative humidity for given temperature and barometric pressure Saturation vapour pressureThis online calculator computes saturation vapour pressure for given temperature and atmospheric (barometric) pressure Sound Speed in GasesThis online calculator computes speed of sound in an ideal gas. Space object velocityIt calculates the circular orbital velocity, escape velocity and planetary system escape velocity for the given planet parameters. Surface tension. Weight and volume of the drop of liquidThis online calculator calculates the weight and the volume of the drop given the surface tension, diameter of the capillary tube, and density of the liquid Temperature scalesConversion between different temperature scales The buoyant forceThis calculator computes the buoyant force and weight of the liquid displaced, given the volume of body in water The waves and the wind. Calculation of wave characteristicsCalculation of wave characteristics The waves and the wind. Wave height statistical forecastingPredicting the height of the waves depending on the wind strength Thermodynamics mixing problem solverOnline calculator to solve thermodynamic equilibrium problems, like finding final temperature when mixing fluids or finding required temperature for one of the fluids to achieve final mixed temperature Tips and tricks #5: How to show/hide input and output controls in a calculatorThis article describes how to control visibility of input and output controls in a calculator Traveling Wave RelationshipThe relationship of the wave frequency, wavelength and propagation velocity. Wind Chill IndexThis online calculator computes Wind Chill Index using Wind Chill Formula from Environment Canada Wind energy and wind powerThis online calculator computes kinetic energy of wind and wind power p-t Graph AnalysisThis online calculator analyses position vs time table, which is often used to describe 1-D kinematics motion.
A1Z26 is very simple direct substitution cypher, where each alphabet letter is replaced by its number in the alphabet.
|Air Flow Calibration|
This calculator is used to set the air flow rate through a grain bin equipped with an aeration fan. It assumes that the air flow can be controlled with baffles, spill gates or variable fan speed. It requires an air flow meter or anemometer. This calculator determines the air speed needed at the top collar of bin in order to achieve the desired air flow rate (CFM/bu Cubic Feet per Minute per bushel).
|Ancient PixelArt: CompuServe RLE file viewer|
This online calculator can parse and display images from CompuServe graphics files in RLE format
|Apartment sale tax|
Apartment sale tax
|Apartment sale tax in Russia|
Apartment sale tax in Russian federation according to 2017 legislation changes
|Area of an irregular quadrangle with the given sides|
Calculates an area of an irregular quadrangle with the given sides
This calculator allows you to encrypt and decrypt text with Atbash method
|Audio file waveform|
The calculator displays the waveform of the input audio file fragment.
|Average Compressibility Factor, (dimensionless)|
Is the average compressibility factor of the gas flowing through the pipeline
|Average Pressure, psia|
This is the average pressure in the pipe
|Average Temperature, °R|
Average temperature in the pipeline
|Average wage сalculation (for Russia)|
The calculator calculates the average wage, according to the decree of the Russian Federation government dated December 24, 2007 "On specifics of calculation of average wages" in edition of Russian Federation Government Resolution dated November 11, 2009.
|Baffle Plate Gap Calculator|
Use this to determine the baffle plate gap in a tank based on your throat size. Measure bell end depth using something the same width as your baffle plate or enter a zero if there is no belled end.The drawing is looking from the top down.
Barlow´s Formula is used to calculate the pipe pressure considering its diameter, wall thickness, and hoop stress (in the pipe material).
|Butterfly Damper Calculator|
Use this calculator to determine opening area of the damper.
|CSV table to JSON array|
This online calculator converts CSV table to JSON array of objects, using given map of CSV columns to object properties.
|Caesar cipher with numbers|
This online calculator applies Caesar cipher not only to the letters, but to the numbers as well. Numbers expands the alphabet and are included to the rotations. Other symbols except letters and numbers are not transformed.
|Calculadora Blogger Post|
Calculadora Blogger Post
|Calculation of volume in cubic meters by the size of one unit of output|
Calculation of volume in cubic meters by the size of one unit of output (by user's request)
|Check Digit Mod 11 (ISBN-10 check digit)|
This online calculator generates and validates check digit with mod11 algorithm, used by ISBN-10
|Circular Intake/Exhaust Calculator|
Used to calculate opening area when a circular cover is pivoted over a circular opening.
|Comparing prices using cost per square meter|
This calculator helps to compare prices by calculating cost per square meter
|Compound interest at certain number of days|
|Compound interest with an equal monthly investment|
The calculation of the accumulated amount with the monthly investiment
This online calculator calculates entropy of Y random variable conditioned on X random variable and X random variable conditioned on Y random variable given a joint distribution table (X, Y) ~ p
|Conversion between metric units of length and old Russian system of measures units of length|
The calculators in this article convert units of length from old Russian system of measures units to metric units and back.
|Cost of one hour (or kilometer)|
Calculation of price per 1 kilometer by user request
|Cost per unit of volume|
This online calculator calculates cost per unit of volume (cubic unit) given length, width and height of a strip
|Cubic meters of wood|
This calculator calculates the volume in cubic meters from unit sizes and number of units and vice versa
|Cylindrical Tank Volume Calculator|
Use this calculator to determine your cylindrical tank volume in cubic inches and gallons even if one or both ends are rounded. Especially useful if you've cut the tank in length. If you've got a flat end just leave it blank or enter 0.
Calculator of the daily calorie rate, taking into account the level of physical activity.
Date plus or minus date parts (years, months, days, weeks, hours, minutes, seconds), time zone conversion.
|Deal profitability analysis |
Deal profitability analysis after paying taxes (VAT and income tax)
|Decision Tree Builder|
This online calculator builds decision tree from training set using Information Gain metric
|Degrees-minutes-seconds to decimal degrees conversion and vice versa.|
This online calculator converts the value of an angle given in the form of the degrees-minutes-seconds to degrees, expressed in decimal fraction and back from decimal fraction to degrees-minutes-seconds.
|Determination of the baby's sex|
It's unscientific, but it surprisingly works.
|Distance between two cities|
Calculates the distance between the two cities. Uses the directory of geographical city coordinates for the calculation.
|Dollars to rubles and vice versa by Central Bank of Russia exchange rate|
|Effective interest rate|
|Equilibrium moisture content |
The calculator gives the wood equilibrium moisture content by given temperature and relative humidity.
|Exotic length units|
Converter from exotic length units to meters
|Extract domain names from URLs and count unique names|
This calculator extracts domain names from URLs and counts unique names
Calculates an additional amount of potassium chloride to achieve the standards when adding other potassium fertilizers.
Calculation of the film segment duration in frames, hours, minutes, seconds.
|Flow Rate and Pressure Drop of Gas Through a Pipeline|
Calculation of Flow rate of gas through a pipeline.
|Ford VIN decoder - Line information|
This calculator tries to extract car line information from supplied 5,6 and 7 positions of VIN number
Calculates fuel quantity consumed by car with given driving given distance.
|Fuel spent in liters, fuel tanks and money|
Calculation of fuel spent based on the distance traveled and the average fuel consumption per 100 km, in liters, in fuel tanks and money
|Grain Drying with Natural Air|
Calculator to determine conditions for drying grain.
|Gravity Falls Author's symbol substitution cipher decoder|
This online calculator can decode messages written in the Author's symbol substitution cipher
|Gravity Falls Bill's symbol substitution cipher decoder|
This online calculator can decode messages written with Bill's symbol substitution cipher
|H264 Maximum References Frames|
H264 Maximum References Frames
|HTML table to JSON array|
Th calculator converts the html table code to JSON array with optional data transpose and compression. It also visualizes numeric data on chart.
Hack the three-digit code
Hartley's formula to determine the amount of information contained in a message with length n.
This calculator calculates heat index (apparent temperature), which is used by US meteorologists to determine the human-perceived equivalent temperature, as how hot it would feel if the humidity were some other value in the shade.
|Height in old Russian system of measures|
This calculator computes height expressed in old Russian measure system units: arshins and vershoks
This calculator calculates Humindex, index used by Canadian meteorologists to describe how hot the weather feels to the average person, by combining the effect of heat and humidity.
|Inches to pixels and pixels to inches converter|
This online calculator converts inches to pixels and vice versa given the resolution in pixels per inch
|Index of Coincidence|
This online calculator calculates index of coincidence (IC, IOC) for the given text
|Inflation in Russia|
Calculator of Russian inflation since 1991 to the present time. Based on the data of the Federal State Statistics Service of the Russian Federation. The data updated weekly.
|Information Gain Calculator|
This online calculator calculates information gain, the change in information entropy from a prior state to a state that takes some information as given
|Interest on the deposit and inflation|
This online calculator can check if a word/phrase is an isogram.
|Jaccard / Tanimoto Coefficient|
This online calculator measures the similarity of two sample sets using Jaccard / Tanimoto coefficient
This online calculator computes the convex hull of a given set of points using Jarvis march algorithm, aka Gift wrapping algorithm
This online calculator calculates joint entropy of two discrete random variables given a joint distribution table (X, Y) ~ p
This online calculator performs Kasiski examination of an entered text using trigrams in attempt to discover a key length
|Keyboard layout and password|
Converts the word, typed in Russian letters into a set of symbols corresponding to these letters in English keyboard layout which is often used to create a Russian-speaking user passwords.
|Labor retirement pension amount (for Russia)|
Calculates labor retirement pension amount in accordance with the law.
Calculates the land tax
|Large breed puppy weight gain recommendations|
Large breed puppy weight gain recommendations
|Length of service calculation|
Length of service calculation for several periods of work
|Lines filter by number|
This online calculator filters lines of text by removing designated lines or, you can say, leaving only designated lines
This online calculator can join two csv lists by key column the same way JOIN works in SQL (inner join, left outer join, right outer join)
Calculator that allows you to filter the initial list with the specified multiple filters
Format a list using regular expressions
This calculator parses list using regular expression, then counts unique matches and lists them in decreasing order
This online calculator reverses lines of text
|Lorenc formula of ideal weight|
|Map of France regions|
Simple image map of France regions to illustrate usage of SVG image maps
|Matching lines with regular expression|
This calculator matches lines in text using regular expression. It outputs line numbers and lines, which were matched and which were not matched, separating them.
|McDonald's meal nutrition facts|
Nutrition facts of McDonald's meals according to http://www.mcdonaldsmenu.info
|Miles per gallon to liters per kilometer fuel consumption converter|
Converts miles per gallon to liters per kilometer fuel consumption
Morse Code translator
|Morse code. Mutator|
Transforms text into Morse code and than changes dots and dashes into specified symbols
|Mortgage loan early repayment date|
Calculates the repayment period of the mortgage loan with differentiated payments (Sberbank), depending on the size of the payment.
|Nagler's ideal weight calculator|
|Network address and subnet mask (IPv4)|
This online calculator determines subnet parameters for given IP address and subnet mask
|New customs duties on import of cars by individuals|
It calculates the amount of customs duties for the price, age and engine capacity of the car.
|Numbered list maker|
This online calculator numbers lines of text
|Old Russian money|
Converts old Russian monetary units into more common rubles and kopecks. Created by user's request.
|Oval Tank Volume Calculator|
Find the volume of oval tanks in cubic inches and gallons.
|PATHFINDER cipher checker|
This online calculator decrypts digits encrypted by PATHFINDER type of cipher.
|PSAT/NMSQT Practice Tests Score Calculator|
This calculator helps you to score your official practice tests results.
This calculator generates palette of colors from starting color to ending color, using maximum diversity, "rainbow" style.
This online calculator can check if a phrase is a pangram.
|Peptide dissolution calculator|
Peptides dissolution calculator
|Peptides dissolution calculator.|
Peptides dissolution calculator.
|Pigpen cipher decoder|
This online calculator can decode messages written in the pigpen cipher
|Pipe Wall Thickness|
Pipe wall thickness calculation using Barlow´s formula
|Plane angles measurement systems|
|Pounds to Kilogramms convertion and vice versa|
This online calculator can be used for convertion of kilogramms to pouns, ounces and grains as they are used in USA or UK.
|Pregnancy due date|
Pregnancy due date Calculator by the first day of the last period
|RAID arrays сalculator|
This calculators shows the possible variants of RAID arrays, based on the number of drives available.
|RGB - HSV and HSV - RGB converter|
This calculator converts RGB color to HSV color and vise versa
|Race Heat Calculator |
This online calculator generates grid positions for specified number of heats and entrants of kart racing. It tries to make them as fair as it could by harnessing computer processing power to find best combinations.
|Rail fence cipher|
This article contains two calculators, first can be used to encode message with the rail fence cipher, second can be used to crack message encoded with the rail fence cipher by brute force. Decoded simply outputs decoded message for different number of "rails".
|Random Latin Quote|
Random Latin Quote
|Random Letters Generator|
This online generator just generates specified number of symbols, randomly selecting them from given set of symbols
|Region determination by the registration plate|
|Relation between two numbers|
Different relations between two numbers. Created by user's requst
|Relations between the mass, the length, the width and the area density (surface density) of the fabric|
This online calculator calculates the mass of the fabric given the length, the width and the area density (surface density); the length of the fabric given the mass, the width and the area density; the width of the fabric given the mass, the length and the area density; the area density given the mass, the length and the width
|Relative luminance and contrast ratio|
Two calculators evaluate the relative luminance and contrast ratio for given colors.
|Release Date Countdown gadget|
This calculator allows you to configure the release date or event you want to track and use it as countdown gadget via new "Sharing" functionality
The calculator removes duplicates from an element list.
|Repeated Word Heatmap|
This calculator can help avoid unwanted word repetition in prose. It counts the number of occurrences of each word in the document, both globally, and within the "sliding window" distance before and after each word. It highlights the words which are used frequently near each other.
|Repeated Word Heatmap|
This calculator can help avoid unwanted word repetition in prose. It counts the number of occurrences of each word in the document, both globally, and within the "sliding window" distance before and after each word. It highlights the words which are used frequently near each other.
Converter of Roman numbers and decimal numbers
|Russian Central Bank Currency Rates|
Russian Central Bank Currency Rates
|Russian text typed in English letters|
Restores the Russian phrase, accidentally typed on the English keyboard layout.
|Select a phone number from the text|
This calculator uses regular expressions to select phone numbers from a large block of text
Calculating the weight by the volume of shipment. Created by user's request.
|Shoe size comparison|
This calculator converts european shoe size to its english and US counterparts.
|Simple Interest Daily Rate|
|Simple Moving Averageе|
Simple Moving Average calculation based on candles
|Specific Conditional Entropy|
This online calculator calculates entropy of Y random variable conditioned on specific value of X random variable and X random variable conditioned on specific value of Y random variable given a joint distribution table (X, Y) ~ p
|Square Door Tank Volume|
Use this calculator to determine tank volume if you've modified the tank for square doors.
|Square Stack Calculator|
Due to friction loss when using a rectangular stack, this will calculate the equivalent size of a round stack with the same airflow.
|Standard Galactic Alphabet decoder|
This online calculator can decode message written with standard galactic alphabet symbols
|Substitution cipher breaker|
This online calculator tries to decode substitution cipher without knowing the key. It uses genetic algorithm over text fitness function to break the encoded text
|Tank Volume Calculators|
Use one of these to determine your tank's volume.
|Tax deductions from personal income tax|
|The Central Bank of Russia exchange rate difference|
|The Discrete Fourier Transform Sandbox|
This calculator visualizes Discrete Fourier Transform, performed on sample data using Fast Fourier Transformation. By changing sample data you can play with different signals and examine their DFT counterparts (real, imaginary, magnitude and phase graphs)
|The amount of material for the mesh|
It's required to produce a mesh with predetermined length and width, roughly square meshes from tape with predetermined width. It is necessary to calculate the total length of the tape.
|The number of packs steroid you need for cycle|
The number of packs steroid you need for cycle
|Throat Calculator for Cylindrical Tanks|
Use this calculator to lay out the throat opening on a cylindrical tank, using the throat area from the Pit Calc.
|Throat Calculator for Overlapping Cylindrical Tanks|
Use this calculator to determine the throat cut-out when using two cylindrical tanks of the same or different diameter. The cut-out width will always be the same for both tanks. Enter the tank's diameter and the throat area from the Pit Calculator.
The Throat is the opening between the firebox and cook chamber. Enter the area given by the PitCalc and choose a shape that works best for your build.
|Time Series Autocorrelation function (ACF)|
This online calculator computes autocorrelation function for given time series and plots correlogram
|Tips and tricks #10: Files, long calculation mode|
The article describes how to use input and output files in Planetcalc calculators
|Tips and tricks #1: How to set output value|
This article describes process of calculator creation and how to set output value.
|Tips and tricks #2: How to make calculator translatable into different languages |
This article describes the process of adding translation support to the calculator, so it can be translated into different languages.
|Tips and tricks #3: How to make calculator with custom errors|
This article describes the process of adding custom errors to the calculator
|Tips and tricks #4: How to make calculator with table output|
This article describes how to make calculator which outputs results in table format
|Tips and tricks #6: How to make calculator with virtual keyboard|
This article describes how to create calculator with virtual keyboard using SVG image
|Tips and tricks #7: How to make calculator with SVG image map|
This article describes how to create calculator with image map using SVG image
|Ton-kilometer. Conversion based on the cost of a kilometer|
Calculation of a cost of ton-kilometer
The calculator generates different frequency and waveform sound tones.
|Trapezoid - Shaped Throat Opening|
Use this calculator to lay out a trapezoidal shaped throat cut-out. Enter the throat area from the PitCalc, your tank's diameter and dam height.
|URL-encoded string decoder|
This converter decodes URL-encoded string (percent-encoded characters). It converts reserved characters as well as UTF-8 characters
|Unique words count|
The calculator counts number of unique words in a given text. It also count number of repeated words. It also can remove all the repetitions from the text.
|Universal High School GPA Calculator|
This online calculator lets you figure out your high school GPA. Even more, it provides you with editable conversion tables and weights, so you can tweak calculations in case you need it.
|Unused leave compensation at dismissal|
Calculates the payment of compensation for unused leave, envisaged by the labor legislation of the Russian Federation to the dismissal of an employee.
|Vigenère cipher breaker|
This online calculator tries to decode Vigenère cipher without knowing the key. It uses the index of coincidence technique.
|Wage payment delay compensation |
It calculates the amount of monetary compensation, which the employer must pay the employee for the delay of wages or other payments, according to the Russian Federation Labour Code.
Amount of cubic meters and amount of rolls of wallpaper as you enter the size of walls and the size of rolls
|When to drive after drinks?|
Calculates time weathering of alcohol in the blood to normal
With Planetcalc plugin for Wordpress you can easily insert any planetcalc calculator in your wordpress-based site or blog pages.
|Калкулатор на поени|