How to convert centimeters to millimeters
To convert centimeters to millimeters, use the formula mm = cm × 10. In other words, multiply the number of centimeters by 10 to get the equivalent in millimeters. For example, 5 cm equals 50 mm.
CM to MM Converter
Convert centimeters to millimeters instantly. 5 cm = 50 mm.
1 cm = 10 mm
| CM (cm) | MM (mm) |
|---|---|
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 3 cm | 30 mm |
| 4 cm | 40 mm |
| 5 cm | 50 mm |
| 6 cm | 60 mm |
| 7 cm | 70 mm |
| 8 cm | 80 mm |
| 9 cm | 90 mm |
| 10 cm | 100 mm |
| 15 cm | 150 mm |
| 20 cm | 200 mm |
| 25 cm | 250 mm |
| 30 cm | 300 mm |
| 40 cm | 400 mm |
| 50 cm | 500 mm |
| 75 cm | 750 mm |
| 100 cm | 1,000 mm |
| 250 cm | 2,500 mm |
| 500 cm | 5,000 mm |
| 1,000 cm | 10,000 mm |
Centimeter and Millimeter
The centimeter (cm) and the millimeter (mm) are both units of length. This page gives you an instant, exact conversion between them, a reference table for the most common values, and the underlying formula so you can check the maths yourself. All calculations run in your browser — nothing you type is sent anywhere.
Need to go the other way? Use the MM to CM converter. For all units at once, try the full Length Converter.
Frequently Asked Questions
How do I convert centimeters to millimeters?
Use the formula mm = cm × 10. For example, 5 cm equals 50 mm. Just enter your value in the converter above to get an instant result.
What is 1 centimeter in millimeters?
1 cm = 10 mm. You can multiply any number of centimeters by this figure to convert it, or use the calculator above for exact results.
How do I convert millimeters back to centimeters?
Use the reverse conversion: 1 mm = 0.1 cm. Our MM to CM converter does this for you.