How to use the Length Converter
- Type the length you want to convert.
- Choose the unit you're converting from and the unit you want.
- Read the result instantly. Use the swap button to convert the other way.
- Check the tables below for every unit and common values.
What does this tool do?
Since 1959 the inch has been defined as exactly 2.54 cm, so conversions between metric and imperial lengths are exact. A foot is 12 inches (30.48 cm), a yard is 3 feet and a mile is 5,280 feet (1.609344 km).
Why use it?
- Convert heights, room sizes, screen sizes and distances.
- Exact factors, no rounding surprises.
- Reference tables for common values.
Common length conversions
Quick reference:
| Metric | Imperial / US |
|---|---|
| 1 cm | 0.3937 in |
| 2.54 cm | 1 in |
| 30.48 cm | 1 ft |
| 1 m | 3.2808 ft (39.37 in) |
| 1 km | 0.6214 mi |
| 1.609344 km | 1 mi |
| 170 cm | 5 ft 6.9 in |
| 180 cm | 5 ft 10.9 in |
The formula
inches = centimeters ÷ 2.54
feet = meters ÷ 0.3048
miles = kilometers ÷ 1.609344
Privacy
The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved. There's no account to create and nothing to install.
Frequently asked questions
How do I convert my height from cm to feet and inches?
Divide by 2.54 to get inches, then divide by 12. For 175 cm: 175 ÷ 2.54 = 68.9 inches = 5 ft 8.9 in.
Last reviewed by the M2Toolkit team.