Centimeter to Millimeter
Convert cm to mm instantly — free, no sign-up.
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About the Centimeter (cm)
The Centimeter is one hundredth of a meter, and the everyday unit most of the world uses for height, small objects, and fabric.
About the Millimeter (mm)
The Millimeter is one thousandth of a meter, commonly used for precision measurements like paper thickness or small mechanical parts.
How to convert cm to mm
- Enter the value in cm in the box above.
- The mm equivalent updates instantly.
- Use the swap button to convert mm back to cm just as easily.