# cm to mm

 From millimeter (mm) centimeter (cm) meter (m) kilometer (km) inch (in) foot (ft) yard (yd) mile (mi) To millimeter (mm) centimeter (cm) meter (m) kilometer (km) inch (in) foot (ft) yard (yd) mile (mi) cm = ? mm

This converter makes instant conversions from centimeters (cm) to millimeters (mm). It also provides the conversion steps. To use the converter, please provide a value in the input field. The converter will begin making conversions as the values are being typed in.

### How many millimeters in a centimeter?

Both millimeter and centimeter are units of length in the International System of Units (SI). In SI, units of measurement are comprised of a base unit and a prefix that describes the magnitude of the unit. Both the base units of the millimeters and centimeters are the meter. The prefix "milli-" indicates the magnitude 10-3 and the prefix "centi-" indicates the magnitude 10-2. In other words, a millimeter is = 0.001 meters and a centimeter is = 0.01 meters. Based on these definitions, there are 10 millimeters in a centimeter.

### How to convert centimeters to millimeters

Based on the definition of 10 mm in 1 cm, the cm to mm conversion formula is:

mm = 10 × cm

Thus, to convert from centimeters to millimeters, multiply a value in centimeters by 10. For example, convert 2.56 centimeters to millimeters:

2.56 cm = 2.56 × 10 mm = 25.6 mm