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Home of free online calculators — Calculators.net's mission statement is to be the world's largest and most comprehensive collection of online calculators on the Web.
Calculators.net provide a seemingly endless array of handy and useful calculators along with plenty of conversion tools, organized by a large variety of categories, from math & science to finance, health & everyday cooking — and it's always FREE!
Our length converter tool enables quick and accurate conversions between many units of length measurements.
The useful weight converter tool is here to assist with any conversions between different weight units, such as pounds and kilograms.
How many pints are in a gallon? Our volume conversion tool makes converting between 12 different volume variants a snap.
Miles per hour to Kilometer per hour and backwards — In the need for speed our velocity conversion calculator is your tool for success!
Need to know how to convert degrees to radians? Then come on in, we also master degrees, points and circles in our angle conversion tool.
There are 10 types of people in this world, those who understand binary and those who don't — Our number systems converter will make you the former :-)
What is the time in Russia? Well, with eleven different time zones, the answer is "it depends"... In any case, our time zones converter makes it easy to find out.
(3.75 / 8 votes)Area = π * radius2
A = π * r2 =
Free online math calculators like: Quadratic Equation calculator, Natural Logarithm calculator, Geometry and more — along with tons of other free calculators.