Length converter
Millimetres, inches, feet, metres, kilometres, miles and nautical miles. Type in either box and the other updates.
1 cm = 0.3937 in
The same value in every unit
| Unit | Value |
|---|---|
| Millimetres (mm) | 10 |
| Centimetres (cm) | 1 |
| Metres (m) | 0.01 |
| Kilometres (km) | 0.00001 |
| Inches (in) | 0.3937 |
| Feet (ft) | 0.03281 |
| Yards (yd) | 0.01094 |
| Miles (mi) | 0.000006214 |
| Nautical miles (nmi) | 0.0000054 |
Length conversions
How it’s calculated
Every length is first turned into metres, then into the unit you picked. The inch is defined as exactly 2.54 cm, so a foot is exactly 0.3048 m and a mile is exactly 1,609.344 m. A nautical mile is 1,852 m.