Convert Centimetre to Millimetre
Instantly convert Centimetre (cm) to Millimetre (mm). Free and accurate.
About This Conversion
What is a Centimetre to Millimetre conversion?
One centimetre (cm) is equal to 10 millimetre (mm). This relationship is fixed by international measurement standards and does not change. To convert any number of centimetre to millimetre, multiply your value by 10; to go the other way, divide by 10.
How to convert Centimetre to Millimetre
The conversion formula is: 1 cm = 10 mm. Enter any value into the converter above and the result updates instantly. The formula is also shown alongside the answer so you can check the working or use it in your own calculations.
Where is this conversion used?
Length conversions are needed in construction, interior design, navigation, athletics, and everyday shopping — particularly when switching between metric and imperial products. Engineers, architects, surveyors, scientists, and runners regularly convert between units of length. Metric units (metres, kilometres) are the global standard, while miles, feet, and inches remain common in the United States and, to some degree, the United Kingdom.
Helpful tip
When measuring fabric, timber, or piping, always double-check which unit system your supplier uses before placing an order — a mix-up between feet and metres can be costly.
Formula
1 cm = 10 mm
cm to mm Conversion Table
| cm | mm |
|---|---|
| 0.1 cm | 1 mm |
| 0.5 cm | 5 mm |
| 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 |
| 1000 cm | 10,000 mm |