Online calculator catalog
Life 102
	Calendar   Roman calendar,   Gregorian to fixed date,   Days between dates. The historical version.,   ISO calendar,   Ethiopian calendar, ... +7
	Date and Time   Timer,   Moonphases,   Number of working days between two dates (for Russia),   Date and number of working days (for Russia),   Use of Time Summary, ... +51
	Health   Proportionality of body — McCallum's formula,   Brunhald formula ideal weight calculator,   Lorenc formula of ideal weight,   Strength of alcoholic cocktail,   The basal metabolic rate, ... +14
Professional 265
	Computers   Decision Tree Builder,   Automated Vigenère cipher decoder,   Ancient PixelArt: CompuServe RLE file viewer,   String to list converter,   Check Digit Mod 11 (ISBN-10 check digit), ... +55
	Engineering   Power to the People,   Cartesian and polar two-dimensional coordinate systems,   Calculation of weight by volume,   Laminate flooring. The calculation of the number of planks,   Throat Calculator for Overlapping Cylindrical Tanks, ... +57
	Finance   Deal profitability analysis ,   Comparing prices using cost per square meter,   Compound interest at certain number of days,   Price based on running meter,   Percentage, ... +29
	Navigation   Compass, magnetic and true course.,   Fuel consumption,   Flag semaphore signals,   Nautical measurement units,   Cost of one hour (or kilometer), ... +17
	Statistics   P-value,   Seasonal fluctuations. Seasonal indices. Method of simple averages,   Text fitness (version 2),   Z-score / Standard score,   Events timeline, ... +35
	Telecommunications   Number of agents in call center,   Morse code. Mutator,   PBX channel number calculation,   VOIP call bandwidth, ... +1
	Units converters   Cubic meters of wood,   Calculation of volume in cubic meters by the size of one unit of output,   Conversion of pounds into inches,   Conversion between imperial and metric units of area,   Ton-kilometer. Conversion based on the cost of a kilometer, ... +19
	Сryptography   Vigenère cipher breaker,   Pangram checker,   Gravity Falls Author's symbol substitution cipher decoder,   Gravity Falls Bill's symbol substitution cipher decoder,   Vigenère cipher, ... +12
Study 308
	Chemistry   Peptide calculator,   Concentration of analyte with uncertainty analysis for replicate titrations,   ABV (Alcohol by volume),   Molar mass of the substance,   Dilution calculator and problems solver, ... +14
	Math   Integer factorization. Trial division,   Circle formulae,   Area of a Rectangle by the length of one side and the diagonal,   Polynomial fast exponentiation in finite field,   Sphere, ... +235
	Physics   Thermodynamics mixing problem solver,   Sound Speed in Gases,   Capacitor in Direct Current Circuit,   Average Compressibility Factor, (dimensionless),   Doppler Effect in sound, ... +40