Formula
Convert centimeters to millimeters with:
mm = cm * 10
Example
1 cm = 10 mm
centimeters to millimeters table
Questions
How many millimeters are in a centimeter?
One centimeter is 10 millimeters. Enter any value above to convert instantly.
What is the formula to convert centimeters to millimeters?
Use mm = cm * 10. The calculator applies this for every value you type.
Is this conversion exact?
Yes — it uses the standard conversion factor (mm = cm * 10), rounded to 6 significant digits for display.