Online calculator catalog
Life 57
	Calendar   Mayan calendar, 2012, the end of the world.,   Week number of a given date,   Days between dates. The historical version.,   Moonphases,   How many workdays between two dates?, ... +16
	Date and Time   Monthly issue number generator,   Travel Duration,   Time Span Calculator,   How many months are there between two dates?,   Time zones, ... +41
	Health   The basal metabolic rate,   Ideal weight calculator using Paul Broca formula,
Professional 168
	Computers   Regular expression tester,   Conversion of fractional numbers between numeral systems,   Conversion from decimal numeral system,   Huffman coding,   Count the number of words, ... +18
	Engineering   The diagonals of a parallelogram,   Volume of liquid in a tilted tank with hemispherical heads,   Barometric leveling,   Usable volume of tank,   Cartesian and polar two-dimensional coordinate systems, ... +50
	Finance   Simple Interest,   Price based on running meter,   Nominal interest rates сomparison,   Compound interest,   Calculation of payments on corporate property tax, ... +11
	Navigation   Tidal gate calculator (Rule of twelfths),   Sunrise and sunset time,   Flag semaphore signals,   Compass point between two locations,   Distance across the surface vs distance through the Earth, ... +12
	Statistics   Student t-distribution,   Exponential Moving Average,   Z-score / Standard score,   Binomial distribution, probability density function, cumulative distribution function, mean and variance,   Spearman's correlation coefficient, ... +39
	Telecommunications   VOIP call bandwidth,   Telecommunications traffic, Erlang,   Number of agents in call center,
	Units converters   Math operations on degrees,   Nautical measurement units,   Imperial to Metric and Metric to Imperial measures of length converter,   Conversion from decimal numeral system,   Binary, inverse and complement codes, ... +14
Study 294
	Astronomy   Sunrise and sunset time,   Sun position at a given date. Azimuth and elevation table.,   Julian Day,   Sunrise and sunset calculator,   Shadow length, ... +2
	Chemistry   Convert grams to liters and liters to grams,   Molar mass of the substance,   Raoult's Second law and the freezing temperature.,   Chemical equation balancer,   Convert moles to grams and grams to moles., ... +7
	Math   Polynomial roots,   Modular Multiplicative Inverse,   Polynomial fast exponentiation in finite field,   Polynomial factorization modulo p,   Mean, variance and standard deviation of discrete random variable, ... +224
	Physics   Determining air humidity with psychrometric method,   Projection,   Volume of body given the buoyant force,   Area de la Sombra de un Objeto,   Wind Chill Index, ... +42