How to convert
mm = cm × 10
Reverse: cm = mm × 0.1
mm = cm × 10
Reverse: cm = mm × 0.1
Converting cm to mm
cm (centimeter) and mm (millimeter) are units of length. One cm equals 10 mm. Just type a value in the box above to convert instantly — useful for recipes, drawings, product specs and travel between metric and imperial units.
cm to mm conversion chart
| cm | mm |
|---|---|
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 3 cm | 30 mm |
| 5 cm | 50 mm |
| 10 cm | 100 mm |
| 20 cm | 200 mm |
| 50 cm | 500 mm |
| 100 cm | 1,000 mm |
Frequently asked questions
- How many mm are in one cm?
- 1 cm = 10 mm.
- How do I convert mm back to cm?
- Multiply the mm value by 0.1 to get cm.
- Is my input sent to a server?
- No. Everything is calculated locally in your browser and nothing is uploaded or stored.