How to use MM to CM
- Type a value in millimeters.
- The result in centimeters appears instantly.
- Type in the second box to convert the other way.
How to convert millimeters to centimeters
Multiply the value in millimeters by 0.1. Formula: cm = mm ÷ 10. Example: 10 mm × 0.1 = 1 cm.
Common millimeters to centimeters conversions
5 mm = 0.5 cm. 25 mm = 2.5 cm. 50 mm = 5 cm. 100 mm = 10 cm.
Where is mm to cm conversion used?
Length conversions come up constantly when metric and imperial systems meet: checking your height for a visa or medical form, comparing screen and TV sizes, buying furniture or clothes from another country, reading product dimensions on international shopping sites, and following DIY or engineering drawings.
What are millimeters?
A millimeter is one thousandth of a meter. It is used for small, precise measurements like screw sizes, rainfall and phone thickness.
What are centimeters?
A centimeter is one hundredth of a meter. It is the everyday metric unit for height, clothing sizes and object dimensions in most countries.
Millimeters to centimeters conversion table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 1 | 0.1 |
| 2 | 0.2 |
| 3 | 0.3 |
| 4 | 0.4 |
| 5 | 0.5 |
| 6 | 0.6 |
| 7 | 0.7 |
| 8 | 0.8 |
| 9 | 0.9 |
| 10 | 1 |
| 12 | 1.2 |
| 15 | 1.5 |
| 20 | 2 |
| 25 | 2.5 |
| 30 | 3 |
| 50 | 5 |
| 75 | 7.5 |
| 100 | 10 |
Frequently asked questions
How many centimeters are in 1 millimeter?
1 millimeter = 0.1 centimeters (1 mm = 0.1 cm).
How many millimeters are in 1 centimeter?
1 centimeter = 10 millimeters (1 cm = 10 mm).
What is 10 mm in centimeters?
10 mm = 1 cm.
What is 100 mm in centimeters?
100 mm = 10 cm.
Is the mm to cm conversion exact?
Yes. Since 1959 the inch has been defined as exactly 2.54 cm, so every imperial–metric length factor (inch, foot, yard, mile) is exact. Results here are rounded only for display.
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