Centimetres to Millimetres Converter
Convert centimetre to millimetre instantly. Type a value below — the result updates as you type.
When you need to convert centimetre to millimetre
Length conversions come up constantly in DIY, travel and online shopping — sizing furniture, reading a height in a different system, or checking a screen or fabric measurement listed in unfamiliar units.
Typical values: 0.5 cm is about 5 mm, and 100 cm works out to roughly 1000 mm. Because the ratio is fixed at 10, you can scale any amount linearly — doubling the centimetres doubles the millimetres.
Metric and imperial length units coexist worldwide, so the same object is often quoted two ways depending on the country.
How to convert centimetre to millimetre
One centimetre equals 10 millimetres. To convert, multiply the number of centimetres by 10:
millimetres = centimetres × 10
For example, 10 centimetres × 10 = 100 millimetres.
Centimetres to millimetres conversion table
| Length (cm) | Millimetres (mm) |
|---|---|
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 3 cm | 30 mm |
| 5 cm | 50 mm |
| 10 cm | 100 mm |
| 20 cm | 200 mm |
| 50 cm | 500 mm |
| 100 cm | 1000 mm |
FAQ
How many millimetres are in a centimetre?
One centimetre = 10 millimetres.
How do I convert millimetres back to centimetres?
Divide by 10, or use the millimetres to centimetres converter.