Length Converter
Convert any length unit and see the same value in every other unit.
Common length conversions
Metric units (millimetres, centimetres, metres, kilometres) are based on tens. Imperial and US units (inches, feet, yards, miles) are not, which is why converting between the two systems needs exact factors.
Exact definitions
- 1 inch = 2.54 centimetres (exactly)
- 1 foot = 12 inches = 0.3048 metres
- 1 yard = 3 feet = 0.9144 metres
- 1 mile = 1,760 yards = 1,609.344 metres
- 1 nautical mile = 1,852 metres
Example
100 cm ÷ 2.54 = 39.37 inches. The calculator converts every value through metres, so any pair of units works, and the table under the result lists all of them at once.
Frequently asked questions
How do I convert cm to inches by hand?
Divide the centimetres by 2.54. To go from inches to centimetres, multiply by 2.54.
Is a nautical mile the same as a mile?
No. A nautical mile is 1,852 metres, about 15% longer than the statute mile of 1,609.344 metres.
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