Online calculator catalog
Life 121
	Calendar   Gregorian date to Julian date,   Gregorian date to Hindu mean solar calendar,   Week days calculator,   Armenian calendar,   Ahargana day count to the Gregorian date, ... +14
	Date and Time   Length of service calculation,   Daylight saving time,   Time interval between two dates,   Russian Working Days Calculator,   How many workdays between two dates?, ... +60
	Health   Body proportionality,   Pregnancy Due Date Predictor,   Brunhard's formula ideal weight calculator,   Lorenc Ideal Weight Calculator,   Strength of alcoholic cocktail, ... +13
Professional 325
	Computers   Hartley Information Calculator,   String to list converter,   Unique words count,   List Filter Calculator,   Check Digit Mod 11 (ISBN-10 check digit), ... +60
	Engineering   Liquid level in the tilted cylinder,   Laminate flooring. The calculation of the number of planks,   Internal forces diagrams for the two-support beam,   Heat Index Calculator,   Oval Tank Volume Calculator, ... +34
	Finance   Compound interest with an equal monthly investment,   Accrual-Based Compound Interest Calculator,   Simple Interest Daily Rate,   Percentage,   Bank card number validation, ... +30
	Image processing   Color to Grayscale Conversion,   Jpeg image meta-data,   Color image to black and white image,   Morphological filters,   Median filter, ... +6
	Navigation   City objects observation,   Russia's regional registration plates,   Tidal gate calculator (Rule of twelfths),   Fuel consumption,   Compass Points, ... +15
	Statistics   Simple Moving Average,   Number to Probability,   Poisson Distribution. Probability density function, cumulative distribution function, mean and variance,   Indicators of variations,   Chande momentum oscillator indicator, ... +32
	Telecommunications   Number of agents in a call center,   PBX channel number calculation,   VOIP call bandwidth,   Morse-ify and Modify., ... +1
	Units converters   Expressing length through different units,   Imperial to Metric and Metric to Imperial measures of length converter,   The Decimal to Binary, Hexadecimal, and Octal Converter,   Number of flagstones to units of area and vice versa,   Russian Length Unit Converter, ... +19
	Сryptography   Tips and tricks #4: How to make calculator with table output,   A2Z52 encoder/decoder,   Text file decoder,   Proportionality of the figure 2,   Random Race Heat Calculator, ... +83
Study 419
	Astronomy   Shadow length,   Dates of the beginning and end of polar night and polar day at a given latitude,   Zero Shadow Day,
	Chemistry   Mixing solutions of different concentrations,   The Chemical Reaction Search Calculator,   Molarity to molality and vice versa,   Molar volume,   Molarity calculator, ... +20
	Math   FOIL Calculator,   Binary Coded Decimal (BCD),   Lottery Number Generator,   Combinatorics. Permutation generator from n to m without repetitions,   Cubic equation, ... +309
	Physics   Lifting force of a helium-filled balloon,   Angular velocity and linear velocity,   The waves and the wind. Calculation of wave characteristics,   Gravity Pressure Calculator,   Tips and tricks #5: How to show/hide input and output controls in a calculator, ... +61