Online calculator catalog
Life 94
	Calendar   Days between dates. The historical version.,   Gregorian to fixed date,   365 days calendar date to Gregorian date,   Roman calendar,   Ethiopian calendar, ... +7
	Date and Time   Sobriety calculator,   Convert days to years, months and days,   How many workdays between two dates?,   Old Russian (Byzantine) system of chronology,   Total time, ... +49
	Health   The number of packs steroid you need for cycle,   Ideal weight calculator using Body Mass Index,   Daily Calorie Rate,   When to drive after drinks?,   Strength of alcoholic cocktail, ... +14
Professional 261
	Computers   List intersection,   Check Digit Mod 11 (ISBN-10 check digit),   Repeated Word Heatmap,   Network address and subnet mask (IPv4),   GET request string parser, ... +56
	Engineering   Flow Rate and Pressure Drop of Gas Through a Pipeline,   Density of oil,   Calculation of weight by volume,   Calculation of weight by volume,   Petroleum product density, ... +56
	Finance   Family budget planner,   Calculation of payments on corporate property tax,   Accretion and discounting of annuity payments,   Effective interest rate,   Mortgage calculator, ... +29
	Navigation   Course angles and distance between the two point on the orthodrome(great circle),   Compass, magnetic and true course.,   Tidal gate calculator (Rule of twelfths),   Distance across the surface vs distance through the Earth,   Course angle and the distance between the two points on loxodrome (rhumb line)., ... +17
	Statistics   Lagged scatterplot,   Negative Binomial Distribution. Probability density function, cumulative distribution function, mean and variance,   Seasonal fluctuations. Seasonal indices. Method of simple averages,   Log-normal distribution,   Count to Probability, ... +34
	Telecommunications   Morse code. Mutator,   Number of agents in call center,   Morse Code,   PBX channel number calculation, ... +1
	Units converters   Pounds to Kilogramms convertion and vice versa,   Plane angles measurement systems,   Meters per second and kilometers per hour,   Exotic length units,   Math operations on degrees, ... +18
	Сryptography   Index of Coincidence,   Caesar cipher with numbers,   Isogram checker,   Substitution cipher breaker,   Pangram checker, ... +10
Study 299
	Chemistry   Raoult's Second law and the freezing temperature.,   Molar mass of the substance,   Peptide dissolution calculator,   Convert grams to liters and liters to grams,   Convert moles to liters and liters to moles, ... +13
	Math   Angle between two vectors,   Egyptian fraction to rational number,   Gaussian elimination,   Bin packing problem,   Side of regular polygon from polygon area, ... +229
	Physics   Kinematics. Throwing body up problem,   Pressure over a surface,   Relative humidity to absolute humidity and vise versa calculators,   The waves and the wind. Wave height statistical forecasting,   Thermodynamics mixing problem solver, ... +38