Converters
Length converter
Convert between mm, cm, m, km, inches, feet, yards and miles, live.
- Instant
- Free
- Private (processed locally)
- No sign-up
Every length unit, live
Type a value in the mm, cm, m, km or inches, feet, yards, miles field: the others compute instantly. Handy for DIY, sewing, travel or converting metric/imperial.
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Pick a field
The starting unit.
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Type the value
Decimals accepted.
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Read the equivalents
Updated live.
Useful conversions
- 1 inch = 2.54 cm
- 1 foot = 0.3048 m
- 1 m = 3.2808 feet
- 1 mile = 1.609 km
Reference lengths
| Item | m | ft |
|---|---|---|
| Smartphone | 0.15 | 0.4921 |
| Door | 2 | 6.5617 |
| Olympic pool | 50 | 164.04 |
| Marathon | 42,195 | 138,435 |
Exact conversions via the metre as reference, rounded display. 100% local calculation.
Frequently asked questions
What is 1 cm in inches?
1 cm = 0.3937 inch. Conversely, 1 inch = 2.54 cm exactly. The conversion uses the metre as the internal reference.
What is 1 foot in metres?
1 foot = 0.3048 m exactly. 1 yard = 3 feet = 0.9144 m. 1 mile = 1,609.344 m.
Can I convert large and small values?
Yes, from millimetres to miles. Decimal and negative values are accepted; the display is rounded to stay readable.
Is my data private?
Yes. Everything is computed in your browser; nothing is sent.