Free length calculator
Millimeters to Centimeters Converter (mm to cm)
Enter a value to convert millimeters to centimeters. Results update as you type and include the calculation steps.
mm
Result
Enter a value above
In decimal inches
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As a common fraction
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Feet and inches
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How to convert millimeters to centimeters
Multiply the millimeters value by 0.1.
cm = mm x 0.1
Worked example
For 20 mm: 20 x 0.1 = 2 cm.
The calculator keeps more precision internally than the number displayed, so repeated conversions remain accurate.
Millimeters to Centimeters conversion table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 0.1 mm | 0.01 cm |
| 1 mm | 0.1 cm |
| 2 mm | 0.2 cm |
| 5 mm | 0.5 cm |
| 10 mm | 1 cm |
| 20 mm | 2 cm |
| 25 mm | 2.5 cm |
| 50 mm | 5 cm |
| 100 mm | 10 cm |
| 250 mm | 25 cm |
| 500 mm | 50 cm |
| 1000 mm | 100 cm |
About the units
Millimeter
A millimeter is one thousandth of a meter, one tenth of a centimeter, and exactly 1/25.4 of an inch.
Centimeter
A centimeter is one hundredth of a meter, 10 millimeters, and exactly 1/2.54 of an inch.