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CM to MM converter
Enter a number, fraction, power, π, or arithmetic expression.1 cm = 10 mm millimeters = centimeters × 10
Ready for local conversionCM to MM formula
millimeters = centimeters × 10
1 centimeter = exactly 10 millimeters
A centimeter is one hundredth of a meter and a millimeter is one thousandth, producing an exact factor of ten.
How to convert Centimeters to Millimeters
Multiply centimeters by 10, which moves the decimal point one place to the right. The calculation is exact for any finite decimal input.
Example calculation
A 7.5 cm width is 75 mm: 7.5 × 10 = 75.
7.5 cm = 75 mm
When this conversion is useful
Use centimeters to millimeters for technical sketches, print dimensions, small parts, craft patterns, and specifications that need a finer whole-number scale.
Common Centimeters to Millimeters conversions
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 1 | 10 |
| 2.5 | 25 |
| 7.5 | 75 |
| 10 | 100 |
| 50 | 500 |
| 100 | 1000 |
CM to MM FAQ
One centimeter contains exactly 10 millimeters.
A millimeter is a smaller unit, so it takes ten of them to cover the same length as one centimeter.
Yes. Multiply the complete decimal value by 10; for example, 0.25 cm becomes 2.5 mm.