How Do You Convert Cm to Mm?

How Do You Convert Cm to Mm?

Centimeters and millimeters are both fractional amounts of a metric meter. One centimeter is 1/100 of a meter and 1 millimeter is 1/1,000 of a meter. Therefore, each centimeter is equal to 10 millimeters.

  1. Calculate length in centimeters

    Measure the length of the object in centimeters using a standard ruler or measuring tape. Record the answer.

  2. Multiply the number of centimeters by 10

    Multiply the number of centimeters by 10. For example, if a board measures 42 centimeters, take 42 and multiply it by 10. The board measures 420 millimeters.

  3. Record the answer in millimeters

    Record the converted amount, such as 420 millimeters.