How to convert millimeters to centimeters
Divide the number of millimeters by 10. That is all there is to it, because the factor between millimeters and centimeters never changes.
Formula
cm = mm ÷ 10
Example: 25 millimeters ÷ 10 = 2.5 centimeters.
MM to CM chart
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 0.5 mm | 0.05 cm |
| 1 mm | 0.1 cm |
| 2 mm | 0.2 cm |
| 3 mm | 0.3 cm |
| 4 mm | 0.4 cm |
| 5 mm | 0.5 cm |
| 6 mm | 0.6 cm |
| 7 mm | 0.7 cm |
| 8 mm | 0.8 cm |
| 9 mm | 0.9 cm |
| 10 mm | 1 cm |
| 15 mm | 1.5 cm |
| 20 mm | 2 cm |
| 25 mm | 2.5 cm |
| 30 mm | 3 cm |
| 40 mm | 4 cm |
| 50 mm | 5 cm |
| 60 mm | 6 cm |
| 70 mm | 7 cm |
| 75 mm | 7.5 cm |
| 80 mm | 8 cm |
| 90 mm | 9 cm |
| 100 mm | 10 cm |
| 250 mm | 25 cm |
| 500 mm | 50 cm |
| 1,000 mm | 100 cm |
Values are rounded to at most four decimals. The converter above shows more digits.
About the units
One millimeter is 0.001 meters.
One centimeter is 0.01 meters.
Need the other direction? Use the CM to MM converter. For every length unit at once, open the Length Converter.
Frequently asked questions
How many centimeters are in a millimeter?
There are 0.1 centimeters in one millimeter. In the other direction, one centimeter is 10 millimeters.
How do I convert millimeters to centimeters?
Divide the number of millimeters by 10. For example: 25 millimeters ÷ 10 = 2.5 centimeters.
What is 40 millimeters in centimeters?
40 millimeters equals 4 centimeters.