Online calculator catalog
Life 121
	Calendar   Ahargana day count to the Gregorian date,   Gregorian to fixed date,   Gregorian date to Hindu mean solar calendar,   Coptic calendar,   Gregorian date to the Ahargana day count, ... +14
	Date and Time   Timeline Midnight Converter,   Time Interval Calculator,   Azimuth and solar elevation angle,   How many weeks are between two dates?,   Date to timestamp converter, ... +60
	Health   Weathering of alcohol concentration in the blood,   Ideal weight calculator using Paul Broca formula,   The number of packs steroid you need for cycle,   Daily Calorie Rate,   Brunhard's formula ideal weight calculator, ... +13
Professional 325
	Computers   Decision tree builder,   Audio file waveform,   Shannon Entropy,   Relative luminance and contrast ratio,   VARIANT DATE to datetime string, ... +60
	Engineering   Air Flow Calibration,   Pipe Wall Thickness,   Equilibrium moisture content ,   Throat Calculator for Overlapping Cylindrical Tanks,   Tank Volume Calculators, ... +34
	Finance   Progressive tax,   Commission calculator,   Annuity Calculator,   Effective interest rate,   Compound interest, ... +30
	Image processing   Image color set,   Image Flip & Rotate,   Color image to black and white image,   Median filter,   Color to Grayscale Conversion, ... +6
	Navigation   Course angle and the distance between the two points on loxodrome (rhumb line).,   Russia's regional registration plates,   Ford VIN decoder - Line information,   Cost of one hour (or kilometer),   Tidal gate calculator (Rule of twelfths), ... +15
	Statistics   Triple exponential smoothing,   Generator of random Russian first and last names and surnames with frequency of occurrence,   Hypergeometric Distribution. Probability density function, cumulative distribution function, mean and variance,   Jaccard index,   Z-score from P-value, ... +32
	Telecommunications   Morse Code Converter: Translate and Decode Messages,   VOIP call bandwidth,   PBX channel number calculation,   Number of agents in a call center, ... +1
	Units converters   Imperial to Metric and Metric to Imperial measures of length converter,   Plane angles measurement systems,   Cubic meters of wood,   Nautical Units Converter,   Speed Converter, ... +19
	Сryptography   Random Race Heat Calculator,   Old Russian money,   Proportionality of the figure 2,   A1Z26 cipher,   Pangram checker, ... +83
Study 419
	Astronomy   Declination and maximum altitude of the Sun above the horizon on a given date,   Shadow length,   Dates of the beginning and end of polar night and polar day at a given latitude,
	Chemistry   Peptide calculator,   Alcohol amount in the aqueous alcohol solution,   Convert grams to liters and liters to grams,   Convert grams to moles and moles to grams,   Acid-base titration curves, ... +20
	Math   Arc length calculator,   Rectangle Area Calculator,   Solving limit problems using L'Hospital's Rule,   Explicit Runge–Kutta methods,   Proportion, ... +309
	Physics   Average Temperature, °R,   Simple beam support reaction,   Saturation vapor pressure,   Sound Doppler Shift Calculator,   Tips and tricks #5: How to show/hide input and output controls in a calculator, ... +61