Centimetres to Millimetres Converter
Convert centimetres (cm) to millimetres (mm) 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
- Millimetres
- 10 mm
How to use the centimetres to millimetres converter
- Enter the centimetres (cm).
- The results update as you type, or press Calculate.
- Read the millimetres first, then the supporting figures below it.
Formula
Millimetres = centimetres × 10
Worked example
For example, with these inputs:
- Centimetres (cm): 1
the calculator returns:
- Millimetres: 10 mm
Centimetres to Millimetres table
| Centimetres | Millimetres |
|---|---|
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 5 cm | 50 mm |
| 10 cm | 100 mm |
| 20 cm | 200 mm |
| 25 cm | 250 mm |
| 50 cm | 500 mm |
| 100 cm | 1,000 mm |
| 250 cm | 2,500 mm |
| 500 cm | 5,000 mm |
| 1,000 cm | 10,000 mm |
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.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Frequently asked questions
How many millimetres are in one centimetre?
1 cm = 10 mm.
How do I convert cm to mm?
Millimetres = centimetres × 10.