Formula
cm to mm conversion formula
Use this relationship for a direct conversion:
mm = cm x 10
Worked example
2 cm = 20 mm.
Pixel conversions assume 96 pixels per inch. Use actual device or print PPI when physical pixel size matters.
Typography and Screen Length conversion
Convert Centimeter to Millimeter
1 centimeter (cm) equals 10 millimeter (mm). Enter any value below to convert from cm to mm.
Enter a value and choose units. Results update instantly.
1 cm = 10 mm
All Typography units
From 1 cm| Unit | Value |
|---|---|
| Inch in | 0.3937007874 |
| CSS pixel (96 PPI) px | 37.7952755906 |
| Point pt | 28.3464566929 |
| Pica pc | 2.3622047244 |
| Millimeter mm | 10 |
| Centimeter cm | 1 |
| Twip twip | 566.9291338583 |
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Quick reference
Centimeter to Millimeter table
| Centimeter (cm) | Millimeter (mm) |
|---|---|
| 0.01 | 0.1 |
| 0.1 | 1 |
| 1 | 10 |
| 2 | 20 |
| 5 | 50 |
| 10 | 100 |
| 25 | 250 |
| 50 | 500 |
| 100 | 1,000 |
| 1,000 | 10,000 |
From unit
About the centimeter
Ten millimeters.
Symbol: cm
To unit
About the millimeter
One thousandth of a meter.
Symbol: mm
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Source
Conversion standard
Definitions are checked against CSS Values and Units Level 4. Calculations use full internal precision before display rounding.
View the complete typography and screen length converterQuestions
cm to mm FAQ
How do you convert centimeter to millimeter?
Use the formula mm = cm x 10. 1 centimeter (cm) equals 10 millimeter (mm).
Is the cm to mm conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.