How to use the Unit Converter
- Pick a category such as length or temperature.
- Type a value and choose the units to convert from and to.
- The table shows the value in every other unit of that category.
How it works
Each unit is stored relative to a base SI unit (meter, kilogram, liter…), so any conversion is value × factor(from) ÷ factor(to).
Temperature is converted through Celsius: °F = °C × 9/5 + 32 and K = °C + 273.15.
Frequently asked questions
How many feet are in a mile?
5,280 feet, which is exactly 1,609.344 meters.
Are US and UK gallons the same?
No. A US gallon is 3.785 liters; an imperial (UK) gallon is 4.546 liters. This converter uses US units.