Unit Converter
Convert length, weight, temperature, area, volume and speed between US and metric units, with every other unit shown at once.
Frequently asked questions
How many centimeters are in an inch?
Exactly 2.54. One foot is 30.48 cm and one mile is 1.609344 km.
How do I convert Fahrenheit to Celsius?
Subtract 32 and multiply by 5/9. 98.6 °F is 37 °C; 32 °F is 0 °C.
Are cups and gallons US or UK units here?
US customary. A US gallon is 3.785 liters; an imperial (UK) gallon is 4.546 liters.