Online calculator catalog
Life 51
	Calendar   Gregorian calendar. Julian calendar. The calendar eras.,   Week number of a given date,   Days between dates. The historical version.,   Orthodox Easter date calculator,   Moonphases, ... +13
	Date and Time   Number of days in a year,   Date and interval,   How many workdays between two dates?,   Time Span Calculator,   Time difference between the cities, ... +36
	Health   Ideal weight calculator using Body Mass Index,   The basal metabolic rate,   Ideal weight calculator using Paul Broca formula,
Professional 157
	Computers   Conversion of fractional numbers between numeral systems,   Hill cipher,   Huffman coding,   Shannon Entropy,   LL1 grammar analysis. Yet another top-down parser generator., ... +16
	Engineering   Number of flagstones to units of area and vice versa,   Calculation of weight by volume,   Altitude Pressure,   Root and power,   Parallel and perpendicular lines on a plane, ... +48
	Finance   Compound interest,   The calculation of amortization for tax purposes,   Simple Interest,   Mortgage calculator,   When it becomes profitable to pay the tax as a sole proprietor?, ... +8
	Navigation   Points of the compass,   Course angles and distance between the two point on the orthodrome(great circle),   Sunrise and sunset time,   Course angle and the distance between the two points on loxodrome (rhumb line).,   Beaufort scale, ... +11
	Statistics   Analytical performance indicators,   Z-score / Standard score,   Exponential smoothing,   Probability Urn simulator,   Bayes’ theorem, ... +36
	Telecommunications   VOIP call bandwidth,   Number of agents in call center,   PBX channel number calculation,   Telecommunications traffic, Erlang,
	Units converters   Beaufort scale,   Imperial to Metric and Metric to Imperial measures of length converter,   Display aspect ratio and dimensions,   Converting degrees to radians,   Number of flagstones to units of area and vice versa, ... +14
Study 233
	Astronomy   Angular size, linear size and distance,   Sun position at a given date. Azimuth and elevation table.,   Azimuth and solar elevation angle,   Julian Day,   Sunrise and sunset time, ... +2
	Chemistry   Chemical equation balancer,   Convert moles to liters and liters to moles,   Density of oil,   Molar volume,   Raoult's Second law and the freezing temperature., ... +6
	Math   Circumcircle of a triangle ,   Side length of a triangle,   Quartic equation solution,   How many circles of radius r fit in bigger circle of radius R,   Binary Coded Decimal (BCD), ... +164
	Physics   Free fall. Distance passed task.,   The buoyant force,   Humidification loads,   Energy measurement units,   Petroleum product density, ... +42