About the Length Converter
Convert between metric and imperial length units, from millimeters to miles, and see the value in every unit at once.
Key features
- Convert mm, cm, m, km, inches, feet, yards, miles and nautical miles
- Exact factors: 1 inch = 2.54 cm, 1 mile = 1,609.344 m
- Swap direction with one click
- See the value in every unit at once
- Handles tiny and huge values
- Free, instant, no sign-up
Length and distance conversion
Convert between metric and imperial lengths instantly, whether you're checking a height, a screen size, a running distance or a building plan.
Common conversions
| From | To | Multiply by |
|---|---|---|
| Inches | Centimeters | 2.54 |
| Centimeters | Inches | 0.393701 |
| Feet | Meters | 0.3048 |
| Meters | Feet | 3.28084 |
| Yards | Meters | 0.9144 |
| Miles | Kilometers | 1.609344 |
| Kilometers | Miles | 0.621371 |
| Nautical miles | Kilometers | 1.852 |
Quick reference
| Metric | Imperial |
|---|---|
| 1 cm | 0.3937 in |
| 30 cm | 11.81 in (about 1 ft) |
| 1 m | 3 ft 3.37 in |
| 5 km | 3.107 mi |
| 10 km | 6.214 mi |
| 21.0975 km | 13.109 mi (half marathon) |
| 42.195 km | 26.219 mi (marathon) |
Height conversion
| Feet & inches | Centimeters |
|---|---|
| 5 ft 0 in | 152.4 cm |
| 5 ft 6 in | 167.6 cm |
| 5 ft 10 in | 177.8 cm |
| 6 ft 0 in | 182.9 cm |
| 6 ft 4 in | 193.0 cm |
Related converters
Converting surfaces? Use the Area Converter. For travel, see the Speed Converter or the all-in-one Unit Converter.
How to use the Length Converter
- Enter your numbers in the fields above. Units and options can be changed at any time.
- The result updates instantly as you type; there's no calculate button to press.
- Check the breakdown under the main result for the details behind the number.
- Adjust the inputs to compare scenarios, for example a different rate or term.