Millimetres to Centimetres Converter
Convert millimetres (mm) to centimetres (cm) instantly. Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles.
Result
- Centimetres
- 0.1 cm
How to use the millimetres to centimetres converter
- Enter the millimetres (mm).
- The results update as you type, or press Calculate.
- Read the centimetres first, then the supporting figures below it.
Formula
Centimetres = millimetres × 0.1
Worked example
For example, with these inputs:
- Millimetres (mm): 1
the calculator returns:
- Centimetres: 0.1 cm
Millimetres to Centimetres table
| Millimetres | Centimetres |
|---|---|
| 1 mm | 0.1 cm |
| 2 mm | 0.2 cm |
| 5 mm | 0.5 cm |
| 10 mm | 1 cm |
| 20 mm | 2 cm |
| 25 mm | 2.5 cm |
| 50 mm | 5 cm |
| 100 mm | 10 cm |
| 250 mm | 25 cm |
| 500 mm | 50 cm |
| 1,000 mm | 100 cm |
About this conversion
Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
Frequently asked questions
How many centimetres are in one millimetre?
1 mm = 0.1 cm.
How do I convert mm to cm?
Centimetres = millimetres × 0.1.