To convert centimeters to millimeters, use millimeters = centimeters × 10. For example, 5 cm = 50 mm.
How to convert CM to MM
- Type the value in centimeters.
- The answer in millimeters appears instantly, with the formula.
- Use ⇄ to swap the direction, or pick other units.
CM to MM formula
millimeters = centimeters × 10
Example: 5 cm = 50 mm.
Reverse: 1 mm = 0.1 cm (see MM to CM).
CM to MM conversion table
| Centimeter (cm) | Millimeter (mm) |
|---|---|
| 1 | 10 |
| 2 | 20 |
| 3 | 30 |
| 4 | 40 |
| 5 | 50 |
| 6 | 60 |
| 7 | 70 |
| 8 | 80 |
| 9 | 90 |
| 10 | 100 |
| 11 | 110 |
| 12 | 120 |
| 15 | 150 |
| 20 | 200 |
| 25 | 250 |
| 30 | 300 |
| 40 | 400 |
| 50 | 500 |
| 60 | 600 |
| 70 | 700 |
| 75 | 750 |
| 80 | 800 |
| 90 | 900 |
| 100 | 1,000 |
| 150 | 1,500 |
| 200 | 2,000 |
| 250 | 2,500 |
| 500 | 5,000 |
| 1,000 | 10,000 |
About these units
Centimeter (cm): One hundredth of a metre. Used for body height, clothing and everyday objects in most of the world.
Millimeter (mm): One thousandth of a metre. Used for small measurements, rainfall and engineering drawings.
Frequently asked questions
How many millimeters are in a centimeter?
There are 10 millimeters in one centimeter.
How do I convert centimeters to millimeters?
millimeters = centimeters × 10. Example: 5 cm = 50 mm.
Updated October 2026 · Built and tested by Sharjeel Tahir · How our tools are tested