Convert a length into every unit at once
A length converter turns one distance measurement into every other common unit at once — millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles — so you don't have to look up or calculate each conversion factor separately.
Enter a value.
Pick the unit it's currently in.
Every other unit updates instantly below.
Quickly translate a measurement from a recipe, manual, or spec sheet.
Convert road-trip distances between miles and kilometers.
Switch between feet/inches and meters/centimeters for a project.
Yes. Every imperial-to-metric length conversion here uses the internationally defined exact ratio (for example, 1 inch = 2.54 cm exactly, by international agreement since 1959), not a rounded approximation.
1 centimeter equals 0.3937 inches, and 1 inch equals 2.54 centimeters exactly — that 2.54 figure is the internationally defined exact conversion.
1 meter equals 3.2808 feet, and 1 foot equals 0.3048 meters exactly.
Yes. All imperial-to-metric length conversions here use the internationally agreed exact definitions (for example, 1 inch = 2.54 cm exactly), not rounded approximations.
No. Nothing is saved or sent anywhere — everything runs in your browser and clears when you refresh or close the page.
Converting something else? Try the Weight Converter or Temperature Converter.