DistanceCentimeters to millimeters
1 centimeter = 10 millimeters.
1 centimeter = 10 millimeters. Multiply by 10.
Common amounts
| cm | mm |
|---|---|
| 1 cm | 10 mm |
| 5 cm | 50 mm |
| 10 cm | 100 mm |
| 25 cm | 250 mm |
| 50 cm | 500 mm |
| 100 cm | 1,000 mm |
How it works
How to convert centimeters to millimeters
mm = cm × 10.
Worked examples: 5 centimeters = 50 millimeters; 12 centimeters = 120 millimeters.
About centimeters and millimeters
A centimeter is one hundredth of a meter. A millimeter is one thousandth of a meter.
When you'd convert centimeters to millimeters
Engineering drawings and rulers often switch between the two. Move the decimal point one place to the right.
Common mistake: rounding too early. Keep the full factor and round only the final answer.
The converter on this page works out the answer in your browser as you type, and shows the factor so you can check it by hand.
Questions
How do I convert centimeters to millimeters?
1 centimeter = 10 millimeters. Multiply by 10.
What does the Converter : Units app add?
The same conversion, plus history, a constants library, and the rest of the unit categories on the phone.