Length converter
Every length is converted through metres using exact defined values: 1 inch = 2.54 cm, 1 foot = 12 inches = 30.48 cm, 1 yard = 0.9144 m, 1 mile = 1.609344 km and 1 nautical mile = 1,852 m.
Worked example
- 70 in = 177.8 cm
- 10 km = 6.21371 mi
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Questions people ask
Is 1 inch exactly 2.54 cm?
Yes. The international inch is defined as exactly 2.54 cm, so 1 foot is exactly 30.48 cm.
How many feet are in a mile?
5,280 feet, which is exactly 1.609344 km.