How to convert centimeters to millimeters
To convert a measurement in centimeters to millimeters, multiply the value by 10. The conversion factor comes from the relationship between both units and the meter (the SI base unit of length).
For example, to convert 5 cm to millimeters: 5 × 10 = 50 mm.
What is a centimeter?
A centimeter is a metric unit of length equal to one hundredth of a meter (0.01 m) or approximately 0.394 inches. Introduced as part of the metric system in 1795, the centimeter is derived from the Latin 'centum' (hundred). It remains widely used in everyday measurements despite the SI preference for meters.
Common uses of centimeters include: Human height measurement in most countries; Clothing and body measurements; Screen sizes and display dimensions; Medical measurements (wound size, tumor size).
What is a millimeter?
A millimeter is a metric unit of length equal to one thousandth of a meter (0.001 m) or approximately 0.039 inches. Part of the original metric system, the millimeter derives from the Latin 'mille' (thousand). It became essential during the Industrial Revolution for precision engineering.
Common uses of millimeters include: Engineering tolerances and mechanical parts; Rainfall measurement in meteorology; Paper thickness and printing specifications; Dental and medical precision measurements.
Centimeters to millimeters worked examples
Here are some common values converted:
1 cm = 10 mm 5 cm = 50 mm 10 cm = 100 mm 50 cm = 500 mm 100 cm = 1,000 mm
Frequently asked questions
How many millimeters are in one centimeter?
One centimeter (cm) equals 10 millimeters (mm). Multiply any value in centimeters by 10 to convert to millimeters.
How do I convert centimeters to millimeters?
Multiply the value in centimeters by 10. For example, 5 cm × 10 = 50 mm.
How do I convert millimeters to centimeters?
Multiply the value in millimeters by 0.1, or divide by 10. Use the swap button on the converter above to reverse the direction.
Is the centimeter to millimeter conversion exact?
Yes, metric-to-metric length conversions are exact because all metric units are defined as powers of 10 relative to the meter.
What is the formula for centimeters to millimeters?
The formula is: mm = cm × 10. This is derived from the definition of both units relative to the meter (the SI base unit of length).