Online calculator catalog
Life 120
	Calendar   Week days calculator,   ISO calendar,   Hindu mean solar calendar to Gregorian date,   Coptic calendar,   Gregorian date to Julian date, ... +14
	Date and Time   Date plus days,   Time Interval Calculator,   Time Span Calculator,   Jarvis march,   Travel Duration, ... +59
	Health   Strength of alcoholic cocktail,   Daily Calorie Rate,   Weathering of alcohol concentration in the blood,   Coronavirus disease epidemic in different countries,   Figure's grace, ... +13
Professional 245
	Computers   Text file encoding,   Check Digit Mod 11 (ISBN-10 check digit),   Conditional entropy,   HTML table to JSON array,   Substitution cipher tool, ... +60
	Engineering   Butterfly Damper Calculator,   Baffle Plate Gap Calculator,   Square Door Tank Volume,   Grain Drying with Natural Air,   Pipe Wall Thickness, ... +31
	Finance   Inflation in Russia,   Unused leave compensation at dismissal,   When it becomes profitable to pay the tax as a sole proprietor in Russia?,   Family budget planner,   The calculation of amortization for tax purposes, ... +30
	Image processing   Jpeg image meta-data,   Median filter,   Morphological filters,   Watercolor effect,   Box filters for image processing, ... +5
	Navigation   Earth Radius by Latitude (WGS 84),   Prospect distance from the ground and line of sight distance between two observers,   City objects observation,   Fuel consumption,   Distance across the surface vs distance through the Earth, ... +15
	Statistics   Histogram,   Hypergeometric Distribution. Probability density function, cumulative distribution function, mean and variance,   Time Series Autocorrelation function (ACF),   Cuba World Development Indicators 2016 - in memory of Fidel Castro,   Double exponential smoothing, ... +27
	Telecommunications   Morse code. Mutator,   Number of agents in a call center,   PBX channel number calculation,   Morse Code, ... +1
	Units converters   Conversion of decimal number to other notations,   Meters per second and kilometers per hour,   Total volume calculator,   Digital image size in pixels and photo print size,   Cubic meters of wood, ... +19
	Сryptography   Substitution cipher decoder,   Rail fence cipher,   A2Z52 encoder/decoder,   Caesar cipher with numbers,   Index of Coincidence, ... +12
Study 386
	Chemistry   Acid-base titration curves,   Alcohol amount in the aqueous alcohol solution,   pH of a solution calculator,   Molarity calculator,   Dilution calculator and problems solver, ... +15
	Math   Spherical cap and spherical segment,   Roman numerals math,   Completing the square,   Lengths of triangle sides given one side and two angles,   The Newton Polynomial Interpolation, ... +299
	Physics   Normal force,   Freefall distance problems solver,   Angular velocity and linear velocity,   Battery discharge time depending upon load,   Electricity, Work, and Power, ... +50