Unit Converter
Convert between metric and imperial units for length, weight, volume, temperature, area and speed.
For general use. This unit converter is for general use. Figures are calculated from standard UK/international conversion factors and are not a substitute for calibrated measuring equipment where precision matters.
Enter a value to convert
Choose a category, pick your units and enter a value to see the converted result.
How this converter works
Pick a category, choose the unit you're converting from and the unit you want, then enter a value. For length, weight, volume, area and speed we multiply your value by a fixed conversion factor for the "from" unit to get a common base unit (metres, kilograms, litres, square metres or metres per second), then divide by the factor for the "to" unit. Temperature is different — Celsius, Fahrenheit and Kelvin don't share a common zero, so we convert via formulas instead: Fahrenheit = Celsius × 9/5 + 32, and Kelvin = Celsius + 273.15. UK (imperial) volume units are used throughout — a UK pint (568.261ml) and UK gallon (4.54609l) are both larger than their US equivalents.