Length Converter
Convert inches, feet, miles, cm, meters and km back and forth.
All units
About this tool
Convert between metric and imperial lengths: millimeters, centimeters, meters and kilometers on one side, inches, feet, yards and miles on the other. Type a value, pick your two units, and the result updates as you type. The swap button flips the direction. The value box accepts fractions too, so you can paste a tape-measure reading like 7 5/8 inches straight in.
The "all units" table shows your value in every supported unit at once, which is handy when you are not sure which unit you actually need. Conversions use exact definitions (an inch is 25.4 mm, a mile is 1,609.344 m), so the numbers match what you would get by hand.
Frequently asked questions
- Can I enter fractions like 7 5/8 inches?
- Yes. Type a fraction ("5/8"), a mixed number ("7 5/8"), or a unicode fraction ("7⅝") in the value box and it converts the same as a decimal. So 7 5/8 inches is 193.675 mm.
- How many centimeters are in an inch?
- Exactly 2.54 cm. An inch is defined as 25.4 millimeters, so 1 inch equals 2.54 centimeters.
- How do I convert miles to kilometers?
- Multiply miles by 1.609344. So 1 mile is about 1.61 km, and 60 miles is about 96.6 km. Enter a value above to see the exact figure.
- Is my input sent anywhere?
- No. The conversion runs in your browser with plain JavaScript, so nothing is uploaded and it works offline once the page has loaded.
Related tools
Weight Converter 📌 Convert pounds, ounces and stone to kilograms and grams. Volume Converter 📌 Convert liters, gallons, quarts, pints, cups and fluid ounces. Temperature Converter 📌 Convert Fahrenheit, Celsius, Kelvin and Rankine in any direction. Speed Converter 📌 Convert mph, km/h, m/s, knots and feet per second.