Use our free online calculators to easily convert between different units of measure. Simply select the appropriate calculator from the list below.
Weight & Mass
Supported Units: Pounds, Ounces, Kilograms, Troy Pounds, Scruples, Grams, Carats, Pennyweight, Poundals, Stones, Slugs, Quarter, Metric Tons, Short Tons and Long Tons
Metric Weight
Supported Units: microgram, milligram, centigram, decigram, gram, dekagram, hectogram, kilogram
Temperature
Supported Units: Celsius, Fahrenheit, Rankine, Reaumur, and Kelvin
Length & Distance
Supported Units: Millimeters, Centimeters, Inches, Feet, Yards, Meters, Kilometers, Miles, Mils, Rods, Fathoms and Nautical Miles
Volume
Supported Units: Liquid or dry  Liters, Fluid Ounces, Pints, Quarts, Gallons, Milliliter/cc, Barrels, Gill and Hogshead
Speed
Supported Units: centimeters/second, meters/second, kilometers/hour, feet/second, feet/minute, miles/hour, knots and mach
Pressure
Supported Units: dyne/sq cm, Pascal, poundal/sq foot, Torr, inch H2O and inch mercury.
Area
Supported Units: Square centimeter, Square meter, Square inch, Square foot, Square mile, Square Kilometer, Acres and Circles
Force
Supported Units: Dyne, gramforce, poundals, newtons, pounds and kgmforce
Energy
Supported Units: Joules, Btu, calories, electronvolt, erg, watt hour, therm, toe and tce
Frequency
Supported Units: Hertz, cycles per second, revolutions per second, degrees per second and radians per second
Power
Supported Units: Watts, BTU/hour, footlbs/second, Horsepower and kilowatts
Torque
Supported Units: Poundforce Foot, Poundforce Inch, Kilogramforce Meter, and Newton meter²
Astronomical
Supported Units: Astronomical unit, lightyears and parsecs
