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Length Converter
Enter a value, choose the units, and the conversion happens instantly — including a quick-reference chart for the selected pair. Covers millimeters, centimeters, meters, kilometers, inches, feet, yards, miles and nautical miles.
Length conversion facts
The inch is defined as exactly 2.54 cm, so every imperial–metric length conversion is exact. One foot = 12 inches, one yard = 3 feet, one mile = 5,280 feet = 1.609344 km. Use the chips above for the most searched pairs, or pick any units from the lists.
Height conversions
For body height, convert feet+inches in two steps: feet to cm, then add the remaining inches converted to cm (1 inch = 2.54 cm). Example: 5 ft 9 in = 152.4 cm + 22.86 cm = 175.26 cm.
Frequently Asked Questions
How many cm are in an inch?
Exactly 2.54 cm — this is the international definition of the inch.
How do I convert cm to feet and inches?
Divide cm by 2.54 to get total inches, then divide by 12: the quotient is feet, the remainder is inches.
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