Convert centimeters to millimeters
1 cm = 10 mm — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
10mm
1 cm = 10 mm
How to convert centimeters to millimeters
Multiply the number of centimeters by 10 to get millimeters.
The exact factor is 10 .
Centimeter to Millimeter conversion table
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 1 cm | 10 |
| 2 cm | 20 |
| 3 cm | 30 |
| 5 cm | 50 |
| 10 cm | 100 |
| 20 cm | 200 |
| 25 cm | 250 |
| 50 cm | 500 |
| 100 cm | 1000 |
| 250 cm | 2500 |
| 500 cm | 5000 |
| 1000 cm | 10 000 |
Millimeter to Centimeter conversion table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 1 mm | 0.1 |
| 2 mm | 0.2 |
| 3 mm | 0.3 |
| 5 mm | 0.5 |
| 10 mm | 1 |
| 20 mm | 2 |
| 25 mm | 2.5 |
| 50 mm | 5 |
| 100 mm | 10 |
| 250 mm | 25 |
| 500 mm | 50 |
| 1000 mm | 100 |
Frequently asked
How many millimeters are in a centimeter?
One centimeter equals 10 millimeters (cm → mm). That figure is exact, not rounded.
How do you convert centimeters to millimeters?
Multiply the number of centimeters by 10 to get millimeters.
What is 1 mm in centimeters?
One millimeter is 0.1 centimeters.
What is 10 cm in mm?
10 cm = 100 mm.