mm to cm
This converter makes instant conversions from millimeters (mm) to centimeters (cm). 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 centimeters in a millimeter?
Both centimeter and millimeter 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 centimeters and millimeters are the meter. The prefix "centi-" indicates the magnitude 10-2 and the prefix "milli-" indicates the magnitude 10-3. In other words, a centimeter is 
= 0.01 meters and a millimeter is 
= 0.001 meters. Based on these definitions, there are 
= 0.1 centimeters in a millimeter or there are 10 millimeters in a centimeter.
How to convert millimeters to centimeters
Based on the definition of 10 mm in 1 cm, the mm to cm conversion formula is:
| cm = |
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Thus, to convert from millimeters to centimeters, divide a value in millimeters by 10. For example, convert 64 millimeters to centimeters:
| 64 mm = |
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cm = 6.4 cm |