Centimeters to millimeters
1 centimeter = 10 millimeters
For any other value: mm = cm × 10
Calculator
10 mm
Type a number.
You can leave the unit in: 100 cm is fine.
Centimeters to millimeters chart
The values people look up most.
| centimeters | millimeters |
|---|---|
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 5 cm | 50 mm |
| 6 cm | 60 mm |
| 7 cm | 70 mm |
| 4.2 cm | 42 mm |
| 3 cm | 30 mm |
| 4 cm | 40 mm |
| 10 cm | 100 mm |
| 1.5 cm | 15 mm |
| 6.5 cm | 65 mm |
| 8 cm | 80 mm |
| 5.5 cm | 55 mm |
| 2.5 cm | 25 mm |
| 20 cm | 200 mm |
| 11 cm | 110 mm |
| 9 cm | 90 mm |
| 7.5 cm | 75 mm |
| 30 cm | 300 mm |
| 14 cm | 140 mm |
| 15 cm | 150 mm |
| 0.5 cm | 5 mm |
| 3.5 cm | 35 mm |
| 1.2 cm | 12 mm |
| 6.3 cm | 63 mm |
| 12 cm | 120 mm |
| 25 cm | 250 mm |
| 4.5 cm | 45 mm |
| 1.3 cm | 13 mm |
| 1.7 cm | 17 mm |
Formula
mm = cm × 10
Ten millimeters make a centimeter — just move the decimal point one place.
Where this number comes from
This factor is exact, not rounded. SI prefixes: milli is 10⁻³ and centi is 10⁻².
Source: The International System of Units (SI Brochure), BIPM (Bureau International des Poids et Mesures).
More length conversions
Embed this converter
Free to use on your own site. Copy the code and keep the credit line.