Online calculator catalog
Life 110
	Calendar   Julian and Gregorian calendars,   The Muslim calendar. The Gregorian calendar conversion,   Ethiopian calendar,   Julian days calculation,   Moonphases, ... +26
	Date and Time   How many days are there between two dates?,   Gregorian date to 365 days calendar,   Release Date Countdown gadget,   Time units,   Time interval between two dates, ... +39
	Health   Body proportionality,   Figure's grace,   Ideal weight calculator using Paul Broca formula,   Pregnancy Due Date,   Determination of the baby's sex, ... +14
Professional 271
	Computers   Unicode scripts and blocks,   Network address and subnet mask (IPv4),   Matching lines with regular expression,   Audio file waveform,   Random Letters Generator, ... +53
	Engineering   Film calculator,   Throat Calculators,   Mathematical calculator,   Baffle Plate Gap Calculator,   Number of flagstones to units of area and vice versa, ... +55
	Finance   Simple Interest,   Calculation of payments on corporate property tax,   Simple Interest Daily Rate,   Accretion and discounting of annuity payments,   The Central Bank of Russia exchange rate difference, ... +29
	Navigation   Distance across the surface vs distance through the Earth,   Fuel spent in liters, fuel tanks, and money,   City objects observation,   Compass, magnetic and true course calculator,   Prospect distance from the ground and line of sight distance between two observers, ... +14
	Statistics   Seasonal fluctuations. Seasonal indices. Method of simple averages,   Analytical performance indicators,   Binomial distribution, probability density function, cumulative distribution function, mean and variance,   Indicators of variations,   Lagged scatterplot, ... +37
	Telecommunications   VOIP call bandwidth,   Morse code. Mutator,   Flag semaphore signals,   Morse Code,   Number of agents in a call center, ... +2
	Units converters   Pressure units converter,   Height in old Russian system of measures,   Plane angles measurement systems,   Pounds to Kilogramms convertion and vice versa,   Cartesian and polar two-dimensional coordinate systems, ... +25
	Сryptography   Index of Coincidence,   Atbash cipher,   PATHFINDER cipher checker,   Pangram checker,   Substitution cipher tool, ... +16
Study 311
	Chemistry   Raoult's Second law and the freezing temperature.,   Molar mass of the substance,   Chemical equation balancer,   Fertilizing,   ABV (Alcohol by volume), ... +14
	Math   Determinant of 3x3 matrices,   Hill cipher,   Area de la Sombra de un Objeto,   Area of a quadrilateral,   Sphere, ... +238
	Physics   Temperature scales,   Sound Speed in Gases,   Surface tension. Weight and volume of the drop of liquid,   Dew point,   Kinematics. Throwing body up problem, ... +40