Online calculator catalog
Life 121
	Calendar   Ethiopian calendar,   Ahargana day count to the Gregorian date,   Fixed date to Gregorian date,   Gregorian date to Julian date,   Gregorian to fixed date, ... +14
	Date and Time   City Timezone Converter,   How many workdays between two dates?,   Age Calculator,   Travel Duration,   How much time between two dates?, ... +60
	Health   Determination of the baby's sex,   Nagler's Ideal Weight Calculator,   McDonald's meal nutrition facts,   The basal metabolic rate,   Strength of alcoholic cocktail, ... +13
Professional 325
	Computers   Huffman coding,   Check Digit Mod 11 (ISBN-10 check digit),   Ancient PixelArt: CompuServe RLE file viewer,   Vigenère cipher,   Unicode scripts and blocks, ... +60
	Engineering   Humindex,   Wallpaper calculator,   Pipe Wall Thickness,   Prueba2,   Air Flow Calibration, ... +34
	Finance   Bank card number validation,   Mortgage loan early repayment date,   Compound interest at a certain number of days,   Percentage,   Discount calculator, ... +30
	Image processing   Box filters for image processing,   Image color set,   Color image to black and white image,   Color to Grayscale Conversion,   Median filter, ... +6
	Navigation   Distance between two cities,   City objects observation,   Compass Points,   Points of the compass,   Distance through the Earth, ... +15
	Statistics   Exponential smoothing,   Two sample t-Test,   Mann-Whitney test,   Histogram Builder,   Double exponential smoothing, ... +32
	Telecommunications   PBX channel number calculation,   Number of agents in a call center,   Morse-ify and Modify.,   VOIP call bandwidth, ... +1
	Units converters   Nautical Units Converter,   Height in the old Russian system of measures,   Degrees-minutes-seconds to decimal degrees conversion and vice versa.,   Digital image size in pixels and photo print size,   MPG to L/100 km Conversion Calculator, ... +19
	Сryptography   Apartment sale tax,   Proportionality of the figure 2,   New customs duties on import of cars by individuals,   piscina,   PATHFINDER cipher checker, ... +83
Study 419
	Astronomy   Zero Shadow Day,   Dates of the beginning and end of polar night and polar day at a given latitude,   Declination and maximum altitude of the Sun above the horizon on a given date,
	Chemistry   The Chemical Reaction Search Calculator,   Molar mass of the substance,   Dilution of solutions,   Molar volume,   Finding the reactions for the chain of transformations, ... +20
	Math   Explicit Runge–Kutta methods,   Logarithm Calculator,   Bisection method,   Fixed-point iteration method,   Level of liquid in the cylindrical tank, AKA Quarter-Tank Problem, ... +309
	Physics   Ohm's law,   Kinematic Equations for Constant Acceleration Calculator,   CaCl2 ppm to chlorides WPS ppm converter,   Quantity of heat,   Power into torque, and vice versa, ... +61