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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