Length Converter
Convert between meters, feet, kilometers, miles, and other length units.
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Pick the unit you are converting from and the one you want.
About This Tool
Why use Length Converter?
Convert between millimetres, centimetres, metres, kilometres, inches, feet, yards and miles. Metric and imperial units are linked by exact definitions — one inch is exactly 2.54 cm and one foot exactly 0.3048 m — so the conversions are precise, not approximations.
The three that come up most are 1 m = 3.28 ft, 1 km = 0.621 miles and 1 inch = 2.54 cm. Height is the usual reason people convert: 170 cm is 5 ft 7 in, and 6 ft is 182.88 cm.
Key Benefits
Eight length units
Millimetres through miles, covering everyday, construction and travel measurements.
Exact factors
Based on the international definitions of the inch, foot and yard rather than rounded values.
Instant two-way conversion
Swap the units to go back the other way without retyping.
How to use Length Converter
- 1
Pick the unit you are converting from and the one you want.
- 2
Type the value; the result appears as you type.
- 3
Swap the units to check the reverse conversion.
- 4
For heights, convert to feet and then read the decimal part as inches by multiplying by 12.
Best use cases
Convert a height between centimetres and feet.
Check a product's dimensions listed in inches.
Convert running or driving distances between km and miles.
Work in metric from imperial building plans.
Length Converter FAQs
How many centimetres are in an inch?
Exactly 2.54. To go the other way, divide centimetres by 2.54.
How do I convert metres to feet?
Multiply by 3.28084. So 5 m is 16.4 ft.
How many kilometres is a mile?
Exactly 1.609344 km. A 5 km run is 3.11 miles and a marathon is 26.2 miles.
How do I write a height in feet and inches?
Convert to feet, keep the whole number, then multiply the decimal part by 12. 1.75 m is 5.741 ft, and 0.741 × 12 ≈ 8.9, so about 5 ft 9 in.
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