Unit Convertions of Angle,Area,Density,Energy,Force,Len,Pow,Press,Speed,Temp,Time,Vol

Unit conversions of
* angle measurements like degrees, radians, circles, turns
* area measurements like square meters, square feet, acres
* bits, bytes, kilobytes, gigabytes
* density measurements like kilogram / cubic meter, milligram / liter, pounds / cubic inch
* electric current measurements like ampere, watt / volt
* energy measurements like calories, joules, megajoules, watt hour
* force measurements like newtons, pound force, tons force
* fuel consumption measurements like kilometers/liter, liters/100km, miles/gallon
* length measurements like meter, inches, feet or light years
* mass measurements like kilograms, pounds, stones
* power measurements like watts, horsepower, joules/second
* pressure measurements like pascals, psi, bars, atmospheres, newton/sq. meter
* speed measurements like kilometers/hour, miles/hour, knots
* temperature measurements like Celsius, Fahrenheit, Kelvin
* time measurements like seconds, minutes, hours, days, weeks, years
* volume measurements like cubic meters, liters, gallons, pints