Convert Centimeters to Millimeters

Learn How to Convert Centimeters to Millimeters Using our Conversion Formula

Converting a centimeter length measurement to a millimeter measurement involves multiplying your length by the conversion ratio to find the result. A centimeter is equal to 10 millimeters, so to convert simply multiply by 10.

For example, 5cm = (5 × 10) = 50mm.

Our inch fraction calculator can add centimeters and millimeters together and it also automatically converts the results to both imperial and metric values.

Centimeters and millimeters are both units used to measure length. Learn more about length and find more length measurement conversion calculators. A centimeter is a metric measurement and can be abbreviated as cm, for example 1cm. A millimeter is a metric measurement and can be abbreviated as mm, for example 1mm. Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

Millimeter is spelled millimetre internationally, and it is equal in length to .1 centimeters, 1000 micrometers, or ⁵/₁₂₇ inch. They are represented by the smallest ticks on most metric rulers. To get a reference point of the size, the thickness of a dime is 1.35mm.

Internationally the centimeter is actually spelled centimetre and it's equal to 10 millimeters, .01 meters, or .393701 inches. Metric rulers have 30cm and they are the larger measurement. A standard pencil is just about 1cm thick, and can be used to get a rough idea of the size of a centimeter.

We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or combination with both values, so make sure you get the correct type for your needs. If you need a ruler you can also download and print our free printable rulers which include both imperial and metric measurements.