Length Converter
Converts lengths between metric and imperial units.
Convert length
Result
0.1
1 Millimetres (mm) = 0.1 Centimetres (cm)
All units
- Millimetres (mm)
- 1
- Centimetres (cm)
- 0.1
- Metres (m)
- 0.001
- Kilometres (km)
- 1.0000e-6
- Inches (in)
- 0.03937
- Feet (ft)
- 0.003281
- Yards (yd)
- 0.001094
- Miles (mi)
- 6.2137e-7
- Nautical miles (nmi)
- 5.3996e-7
How to use this calculator
- Enter the amount you want to convert.
- Choose the unit you have (From) and the unit you want (To).
- Read the result instantly — every other unit is listed too.
How it works
The length is shown in millimetres, centimetres, metres, kilometres, inches, feet, yards and miles. For reference, 1 metre = 100 cm = 39.37 inches = 3.281 feet.
Worked example
1 metre. = 1,000 mm = 100 cm = 3.28 ft = 39.37 in.
Frequently asked questions
How many feet are in a metre?
About 3.281 ft (39.37 inches). Going back, 1 foot = 0.3048 m exactly.
How accurate are the conversions?
They use standard conversion factors at full device precision, so they're reliable for everyday and professional use.
Does it work offline and stay private?
Yes — the conversion runs entirely in your browser, with no sign-up and nothing sent to a server.
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Cite this tool
Zerdly. (2026). Length Converter. Retrieved from https://www.zerdly.com/tools/length-converter/
Length conversion table
How much one of each unit equals in the others — read each row as “1 [row unit] = …”. All values are exact conversions.
| 1 unit = | mm | cm | m | km | in | ft | yd | mi |
|---|---|---|---|---|---|---|---|---|
| 1 mm | 1 | 0.1 | 0.001 | 0.000001 | 0.03937 | 0.003281 | 0.001094 | 0.000001 |
| 1 cm | 10 | 1 | 0.01 | 0.00001 | 0.393701 | 0.032808 | 0.010936 | 0.000006 |
| 1 m | 1,000 | 100 | 1 | 0.001 | 39.370079 | 3.28084 | 1.093613 | 0.000621 |
| 1 km | 1,000,000 | 100,000 | 1,000 | 1 | 39,370.07874 | 3,280.839895 | 1,093.613298 | 0.621371 |
| 1 in | 25.4 | 2.54 | 0.0254 | 0.000025 | 1 | 0.083333 | 0.027778 | 0.000016 |
| 1 ft | 304.8 | 30.48 | 0.3048 | 0.000305 | 12 | 1 | 0.333333 | 0.000189 |
| 1 yd | 914.4 | 91.44 | 0.9144 | 0.000914 | 36 | 3 | 1 | 0.000568 |
| 1 mi | 1,609,344 | 160,934.4 | 1,609.344 | 1.609344 | 63,360 | 5,280 | 1,760 | 1 |
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.