Unit converter
Metric to imperial and back – handy for overseas recipes, car specs, weather and the odd pub argument about stone.
All conversions
How it works
Each value is converted to a base unit (metres, kilograms, litres or metres per second) and then into the unit you want. Temperature uses formulas instead of a simple ratio:
°F = °C × 9 ÷ 5 + 32 K = °C + 273.15Worked example
A US recipe says 350 °F. (350 − 32) × 5 ÷ 9 = 176.7 °C, so set the oven to about 180 °C (160 °C fan-forced).
Someone's 6 ft tall: 6 × 0.3048 = 1.83 m.
Common questions
Why is an Australian tablespoon different?
An Australian tablespoon is 20 mL, while US and UK tablespoons are about 15 mL. It matters in baking – if a recipe is from overseas, check which one it means.
How do I convert Celsius to Fahrenheit?
Multiply by 9, divide by 5 and add 32. So 25 °C is 77 °F, and 40 °C is 104 °F.
How many km/h is 100 mph?
About 160.9 km/h. One mile is exactly 1.609344 km.
Is a US gallon the same as a UK gallon?
No. A US gallon is about 3.785 L and an imperial (UK) gallon is about 4.546 L.