How to convert millimeters to centimeters
One millimeter equals 0.1 centimeters. To convert, multiply the number of millimeters by 0.1 (or divide by 10):
Mental-math shortcut: Divide millimeters by 10 — just move the decimal point one place left: 25 mm = 2.5 cm.
Example
Convert 25 millimeters to centimeters: 25 mm × 0.1 = 2.5 cm.
Millimeters to Centimeters conversion chart
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 1 | 0.1 |
| 2 | 0.2 |
| 3 | 0.3 |
| 5 | 0.5 |
| 8 | 0.8 |
| 10 | 1 |
| 15 | 1.5 |
| 20 | 2 |
| 25 | 2.5 |
| 30 | 3 |
| 50 | 5 |
| 75 | 7.5 |
| 100 | 10 |
| 150 | 15 |
| 500 | 50 |
| 1,000 | 100 |
What is a millimeter?
A millimeter (mm) is one thousandth of a meter. It is used for small, precise measurements such as screw and drill-bit sizes, jewelry, rainfall, camera lenses and engineering drawings. There are 10 millimeters in a centimeter and exactly 25.4 millimeters in an inch.
What is a centimeter?
A centimeter (cm) is one hundredth of a meter, roughly the width of a fingernail. It is the everyday unit for height, body measurements and clothing sizes in most of the world. One centimeter is about 0.3937 inches, and exactly 2.54 centimeters make one inch.
Converting the other way? Use the Centimeters to Millimeters converter.
Frequently asked questions
How many centimeters is one millimeter?
One millimeter is 0.1 centimeters.
How do I convert millimeters to centimeters?
Multiply the value in millimeters by 0.1. For example, 25 mm × 0.1 = 2.5 cm.
What is 100 mm in centimeters?
100 mm is 10 centimeters.
How do I convert centimeters to millimeters?
Multiply centimeters by 10 (or divide by 0.1). You can also use our Centimeters to Millimeters converter.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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