Converters
Unit Converter
Convert length, weight, volume, area, speed and temperature in one place.
Unit Converter
Result
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How to convert units
Choose a category, type the amount, and pick the units to convert between. The result updates instantly, and the line below shows the exact conversion rate.
Common conversions
- 1 inch = 2.54 cm · 1 foot = 30.48 cm · 1 mile = 1.609 km
- 1 kg = 2.205 lb · 1 oz = 28.35 g · 1 stone = 6.35 kg
- 1 US gallon = 3.785 L · 1 cup = 236.6 mL
- °F = °C × 9/5 + 32 · K = °C + 273.15
Frequently asked questions
How many cm are in an inch?
There are exactly 2.54 centimetres in one inch. To convert inches to cm, multiply by 2.54.
How do I convert kg to pounds?
Multiply kilograms by 2.20462. For example, 70 kg × 2.20462 ≈ 154.3 lb.
How do I convert Celsius to Fahrenheit?
Multiply by 9, divide by 5, then add 32: °F = °C × 9/5 + 32. So 20°C = 68°F.
Are US and UK gallons the same?
No. A US gallon is about 3.785 litres and a UK (imperial) gallon is about 4.546 litres. This tool uses US gallons.