Online calculator catalog
Life 120
	Calendar   Roman calendar,   Ethiopian calendar,   Ahargana day count to the Gregorian date,   Coptic calendar,   Days between dates. The historical version., ... +14
	Date and Time   Time Interval Calculator,   How many weeks are between two dates?,   Date weeks out or before,   Time percentage,   Travel Duration, ... +59
	Health   Daily Calorie Rate,   Coronavirus disease epidemic in different countries,   Body Proportions Calculator,   Proportional Body Calculator: McCallum's Formula,   Brunhard's formula ideal weight calculator, ... +13
Professional 247
	Computers   VARIANT DATE to datetime string,   Unique words count,   Regular expression tester,   Numeral System Converter,   Shannon-Fano coding calculator, ... +60
	Engineering   Trapezoid - Shaped Throat Opening,   Throat Calculator for Cylindrical Tanks,   Film calculator,   Flagstone Paving Calculator,   Baffle Plate Gap Calculator, ... +32
	Finance   Calculation of payments on corporate property tax,   Price Comparison Per Square Meter Calculator,   Labor retirement pension amount (for Russia),   Interest on the deposit and inflation,   The calculation of amortization for tax purposes, ... +30
	Image processing   Median filter,   Digital images parameters comparison,   Color image to black and white image,   Image Flip & Rotate,   Box filters for image processing, ... +6
	Navigation   Earth Distance Calculator,   Compass point between two locations,   Prospect distance from the ground and line of sight distance between two observers,   City objects observation,   Distance through the Earth, ... +15
	Statistics   Simple Moving Average,   Indicators of variations,   Seasonal fluctuations. Seasonal indices. Method of simple averages,   Exponential Moving Average,   Double exponential smoothing, ... +27
	Telecommunications   Number of agents in a call center,   Morse Code Converter: Translate and Decode Messages,   PBX channel number calculation,   Morse-ify and Modify., ... +1
	Units converters   Exotic length units,   Pounds to kilograms conversion and vice versa,   Conversion between imperial and metric units of area,   Degrees-minutes-seconds to decimal degrees conversion and vice versa.,   Speed Converter, ... +19
	Сryptography   Standard Galactic Alphabet decoder,   Pangram checker,   PATHFINDER cipher checker,   Gravity Falls Bill's symbol substitution cipher decoder,   Kasiski test, ... +12
Study 387
	Chemistry   Dilution calculator and problems solver,   Molar Mass Calculator,   Molar volume,   pH of a solution calculator,   Convert moles to liters and liters to moles, ... +16
	Math   Side length of the regular polygon,   Liquid volume in a rectangular tank,   The greatest common divisor of two integers,   Heron's formula calculator,   Quartic equation solution, ... +299
	Physics   Freefall distance problems solver,   Battery discharge time depending upon load,   Ohm's law,   Saturation vapor pressure,   Vertical Collision Kinematics Calculator, ... +49