Online calculator catalog
Life 113
	Calendar   Old Russian (Byzantine) system of chronology,   Ethiopian calendar,   ISO calendar,   The Muslim calendar. The Gregorian calendar conversion,   Coptic calendar, ... +28
	Date and Time   Time scales,   Time zones,   Date by the Julian Day Number,   Dynamical Time difference,   Time percentage, ... +40
	Health   The number of packs steroid you need for cycle,   Pregnancy Due Date,   Nagler's ideal weight calculator,   Ideal weight calculator using Body Mass Index,   The basal metabolic rate, ... +14
Professional 271
	Computers   Random Letters Generator,   Remove duplicates,   RAID arrays сalculator,   Shannon coding,   Huffman coding, ... +53
	Engineering   Determining air humidity with the psychrometric method,   Air Flow Calibration,   Boiling point of pure water at elevated altitudes,   Parallel and perpendicular lines on a plane,   Walls volume, ... +54
	Finance   Compound interest at a certain number of days,   Progressive tax,   Calculation of payments on corporate property tax,   Simple Interest,   Dollars to rubles and vice versa by Central Bank of Russia exchange rate, ... +29
	Navigation   Distance across the surface vs distance through the Earth,   Ford VIN decoder - Line information,   Distance through the Earth,   Compass Points,   Tidal gate calculator (Rule of twelfths), ... +14
	Statistics   Binomial distribution, probability density function, cumulative distribution function, mean and variance,   Text fitness (version 3),   Exponential smoothing,   Mann-Whitney test,   Spearman's correlation coefficient, ... +36
	Telecommunications   VOIP call bandwidth,   Morse code. Mutator,   PBX channel number calculation,   Morse Code,   Flag semaphore signals, ... +2
	Units converters   Conversion of decimal number to other notations,   Plane angles measurement systems,   Conversion between metric units of length and old Russian system of measures units of length,   Total volume calculator,   Binary, inverse, and complement codes, ... +27
	Сryptography   Caesar cipher with numbers,   Automated Vigenère cipher decoder,   A2Z52 encoder/decoder,   Playfair cipher,   Substitution cipher decoder, ... +16
Study 314
	Chemistry   Raoult's Second law and the freezing temperature.,   pH of a solution calculator,   Peptide calculator,   Peptide dissolution calculator,   Peptides dissolution calculator., ... +14
	Math   Distinct degree factorization,   Pythagorean theorem calculator,   Seating chart,   Stirling's approximation of factorial,   Area of a quadrilateral, ... +241
	Physics   Tips and tricks #5: How to show/hide input and output controls in a calculator,   Coulomb's law,   The waves and the wind. Calculation of wave characteristics,   Sound Speed in Gases,   Wind Chill Index, ... +40