Unit conversion
Length, weight, volume, temperature, energy and more
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Unit converter Convert between metric, imperial and US units across fourteen categories — length, weight, volume, speed, energy and more. Temperature Convert between Celsius, Fahrenheit, Kelvin and Rankine, with the formula, the substitution and a table of familiar reference points. Fuel cost Work out what a trip will cost in fuel, or find your car’s real consumption from a fill-up, in litres or gallons.
Convert instantly between metric, imperial and US customary units: length, area, volume, weight, temperature, speed, pressure, energy, power, digital storage and angles.
The conversion factors are the exact values fixed by international agreement — one inch is exactly 25.4 mm, one pound is exactly 0.453 592 37 kg.