Convert any unit, metric or imperial
This unit converter turns a value into every common unit at once, so you never have to pick the target unit. It covers length (cm, inches, feet, miles, km), weight (kg, pounds, ounces, grams), temperature (Celsius, Fahrenheit, Kelvin), volume (litres, gallons, cups), area (square feet, acres, hectares), speed, time, data size, energy and pressure.
Click any result to copy it. US and UK (imperial) gallons and pints are listed separately because they differ.
Handy conversions
- 1 inch = 2.54 cm, 1 foot = 30.48 cm, 1 mile = 1.609 km
- 1 kg = 2.2046 lb, 1 lb = 453.6 g, 1 oz = 28.35 g
- °F = °C × 9/5 + 32, and °C = (°F − 32) × 5/9
- 1 US gallon = 3.785 litres, 1 UK gallon = 4.546 litres
- 1 acre = 4,047 m², 1 hectare = 10,000 m² = 2.471 acres
Questions
Why are there two kinds of gallons?
The US gallon (3.785 L) and the UK imperial gallon (4.546 L) are different sizes. Recipes and fuel figures from the US use US gallons.
Is a kilobyte 1,000 or 1,024 bytes?
Both are used. Storage makers use 1 KB = 1,000 bytes; computers often use 1 KiB = 1,024 bytes. Both are listed under Data.