EngiRef / Length conversion
Convert Millimeters to Centimeters (mm to cm)
1 mm = 0.1 cm. Convert millimeters to centimeters with the exact factor, a common-values table and a free converter.
Conversion factor
cm = mm × 0.1
1 mm = 0.1 cm
Multiply by 0.1 cm to go from millimeters to centimeters, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
mm to cm table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 1 mm | 0.1 cm |
| 2 mm | 0.2 cm |
| 5 mm | 0.5 cm |
| 10 mm | 1 cm |
| 20 mm | 2 cm |
| 50 mm | 5 cm |
| 100 mm | 10 cm |
Every figure is computed at build time by the site’s own converter from the length unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many centimeters are in one millimeter?
One millimeter is 0.1 cm, so 100 mm is 10 cm.
What is the formula to convert millimeters to centimeters?
cm = mm × 0.1. Multiply the value in millimeters by 0.1 to get centimeters.
How do I convert centimeters back to millimeters?
mm = cm × 10, so 1 cm is 10 mm. The cm to mm page carries the same table in that direction.