Which miles and feet are used?
A mile (mi) here is the international land mile, not the nautical mile. A foot (ft) is the international foot. For square units such as m², use the area converter: area conversions require squared factors.
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Length converter.
Convert meters, kilometers, centimeters and millimeters, or switch between metric units, miles, yards, feet and inches.
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Length
How do length conversions work?
Each length unit has a fixed relationship to a meter. Multiply the value by the starting unit’s factor in meters, then divide by the target unit’s factor. For example, 2.5 km × 1,000 equals 2,500 m.
result = value × starting unit factor ÷ target unit factor
| Starting value | Equivalent value |
|---|---|
| 1 km | 1,000 m |
| 1 m | 100 cm |
| 1 cm | 10 mm |
| 1 in (inch) | 2.54 cm |
| 1 ft (foot) | 0.3048 m |
| 1 yd (yard) | 0.9144 m |
| 1 mi (mile) | 1.609344 km |
Example: centimeters to inches
For 30 cm, divide 30 by 2.54 to get approximately 11.811 in. The relationships in the table are exact; long decimal results shown by the converter are rounded.
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