Enter a value into any of the boxes, and the others will show the equivalent value in the other units.

°Celsius
 °Fahrenheit
 Kelvin
Millimetres
 Centimetres
 Metres
 Kilometres
Inches
 Feet
 Yards
 Miles
Fathoms
 Chains
 Furlongs
 Nautical Miles
Square Millimetres
 Square Centimetres
 Square Metres
 Square Kilometres
Square Inches
 Square Feet
 Square Yards
 Square Miles
Acres
 Hectares
    
Grams
 Kilograms
 Tonnes
Ounces
 Pounds
 Short Ton
 Long Ton
Stone
 Hundredweight
Litres
 Cubic Centimetres
 Cubic Metres
Imperial Fluid Ounces
 Imperial Pints
 Imperial Gallons
US Fluid Ounces
 US Pints
 US Gallons
Degrees
 Radians
 Mils
Metres per Second
 Kilometres per Hour
Miles per Hour
 Knots
Litres per 100km
 Miles per Imperial Gallon
 Miles per US Gallon
Joule
 Calorie
 British Thermal Unit (BTU)

There are various standards for the Calorie and BTU. This calculation uses the the International Table (IT) calorie, which was defined by the Fifth International Conference on the Properties of Steam (London, July 1956) to be exactly 4.1868 J.

Pascal
 Bar
 Pounds per Square Inch (psi)
Atmospheres
 Torr
 mm of Mercury (mmHg)


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