Convert between metric and imperial units for length, weight, volume, area, speed and temperature. Type a value once and see it in every other unit.
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Useful conversions
| From | To |
|---|---|
| 1 mile | 1.609 km |
| 1 inch | 2.54 cm |
| 1 kg | 2.205 lb |
| 1 stone | 6.35 kg (14 lb) |
| 1 UK gallon | 4.546 litres |
| 1 US gallon | 3.785 litres |
| 1 UK pint | 568 ml |
| 1 acre | 0.405 hectares |
Worked examples
Height in centimetres
5 ft 10 in is 70 inches × 2.54 = 177.8 cm.
Weight in stone
70 kg ÷ 6.35 = 11.02 stone, which is 11 st 0.3 lb.
Oven temperatures
180°C is 356°F, which most recipes round to 350°F (gas mark 4).
UK vs US measures
UK (imperial) gallons, pints and fluid ounces are larger than US ones. A UK pint is 568 ml but a US pint is 473 ml, so check which a recipe or fuel figure uses.
Frequently asked questions
How many km is a mile?
1 mile is 1.609344 km. A 5K race is about 3.1 miles.
How do I convert °C to °F?
Multiply by 9, divide by 5, then add 32. 20°C is 68°F.
How many pounds are in a stone?
14 pounds, or about 6.35 kg.
Is a UK gallon the same as a US gallon?
No. A UK gallon is 4.546 litres; a US gallon is 3.785 litres.
Sources
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