Online calculator catalog
Life 62
	Calendar   Time difference,   Orthodox Easter date calculator,   Date by the Julian Day Number,   Number of days in a year,   Julian and Gregorian calendars, ... +21
	Date and Time   Time. Total sum,   How many months are there between two dates?,   Time difference,   Weeks to months,   Time zones, ... +43
	Health   The basal metabolic rate,   Ideal weight calculator using Body Mass Index,
Professional 168
	Computers   GET request string parser,   Regular expression tester,   Playfair cipher,   Symbol frequencies table,   Huffman coding, ... +18
	Engineering   Median of a triangle,   Level of liquid in the cylindrical tank, AKA Quarter-Tank Problem,   Cartesian and polar two-dimensional coordinate systems,   Angle bisector of a triangle,   Values of one-variable function, ... +50
	Finance   Progressive tax,   Calculation of payments on corporate property tax,   Nominal interest rates сomparison,   Family budget planner,   When it becomes profitable to pay the tax as a sole proprietor in Russia?, ... +11
	Navigation   Course angle and the distance between the two points on loxodrome (rhumb line).,   Prospect distance from the ground and line of sight distance between two observers,   Earth Radius by Latitude (WGS 84),   Nautical measurement units,   Flag semaphore signals, ... +12
	Statistics   Indicators of variations,   Triple exponential smoothing,   Hypergeometric Distribution. Probability density function, cumulative distribution function, mean and variance,   Weighted moving average,   Seasonal fluctuations. Seasonal indices. Constant mean method., ... +39
	Telecommunications   VOIP call bandwidth,   Telecommunications traffic, Erlang,   PBX channel number calculation,
	Units converters   Imperial to Metric and Metric to Imperial measures of length converter,   Digital image size in pixels and photo print size,   Conversion between any bases,   Binary, inverse and complement codes,   Conversion between imperial and metric units of area, ... +14
Study 303
	Astronomy   Sunrise and sunset calculator,   Sunrise and sunset time,   Shadow length,   Azimuth and solar elevation angle,   Julian Day, ... +2
	Chemistry   Molar volume,   Clapeyron-Mendeleev equation. The relationship between the number of moles of gas, the temperature, volume and pressure.,   Convert grams to liters and liters to grams,   Molar mass of the substance,   Convert moles to grams and grams to moles., ... +9
	Math   nth root algorithm,   The limit of the function at the given point,   Gaussian elimination,   Completing the square,   Tips and tricks #10: Dynamic table columns, ... +231
	Physics   Traveling Wave Relationship,   Temperature scales,   Hydrostatic pressure,   Determining air humidity with psychrometric method,   Relative humidity to absolute humidity and vise versa calculators, ... +42