Online calculator catalog
Life 69
	Calendar   Moonphases,   Hebrew calendar,   Number of working days between two dates (for Russia),   Julian Day,   Gregorian to fixed date, ... +28
	Date and Time   Day of week by date,   Time difference between the cities,   Old Russian (Byzantine) system of chronology,   How many hours between two days,   Moonphases, ... +44
	Health   The basal metabolic rate,   Ideal weight calculator using Body Mass Index,
Professional 169
	Computers   GET request string parser,   Shannon Entropy,   Binary, inverse and complement codes,   Regular expression tester,   Hill cipher, ... +18
	Engineering   Binary numbers calculator,   Usable volume of tank,   Tank volume,   Arithmetic sequence calculator and problems solver,   Number of flagstones for paving, ... +50
	Finance   Loan payment example,   Mortgage calculator,   Compound interest,   Commission calculator,   Simple Interest, ... +12
	Navigation   Sunrise and sunset time,   Flag semaphore signals,   Compass, magnetic and true course.,   Tidal gate calculator (Rule of twelfths),   Course angles and distance between the two point on the orthodrome(great circle), ... +12
	Statistics   Student t-distribution,   Probability of given number success events in several Bernoulli trials,   Bayes’ theorem,   Events timeline,   Two sample t-Test, ... +39
	Telecommunications   VOIP call bandwidth,   Telecommunications traffic, Erlang,   Number of agents in call center,
	Units converters   Conversion of decimal number to other notations,   Number of days in a year,   Conversion from decimal numeral system,   Math operations on degrees,   Digital image size in pixels and photo print size, ... +14
Study 311
	Astronomy   Shadow length,   Julian Day,   Sunrise and sunset time,   Sun position at a given date. Azimuth and elevation table.,   Azimuth and solar elevation angle, ... +2
	Chemistry   Molar mass of the substance,   Convert moles to liters and liters to moles,   Molar mass of the substance,   CaCl2 ppm to chlorides WPS ppm converter,   Raoult's Second law and the freezing temperature., ... +11
	Math   The limit of the function at the given point,   Fraction to Decimal and Decimal to Fraction converter,   Triangle angles for given triangle sides,   Geometric progression. The common ratio and the first term,   Angle between two vectors, ... +236
	Physics   Altitude Pressure,   The buoyant force,   Energy measurement units,   Surface tension. Weight and volume of the drop of liquid,   Kinematics. Throwing body up problem, ... +43