How to use the unit converter
- Choose a category such as Length or Weight.
- Enter the value and select the units to convert from and to.
- The result appears instantly, along with the value in every other unit.
Common conversions
- 1 mile = 1.609 kilometers
- 1 kilogram = 2.205 pounds
- 1 inch = 2.54 centimeters
- °F = °C × 9/5 + 32
- 1 US gallon = 3.785 liters
Frequently asked questions
How do I convert kilometers to miles?
Choose Length, enter the kilometers, select Kilometer as the first unit and Mile as the second.
How do I convert Celsius to Fahrenheit?
Choose Temperature, enter the degrees and select Celsius to Fahrenheit. The formula is °C × 9/5 + 32.
Are the units US or UK?
Volume units such as gallon, quart and cup use US measures.
How accurate is the converter?
It uses exact conversion factors and shows up to 10 significant digits.