Convert Centimeters to Millimeters

Enter the length in centimeters below to get the value converted to millimeters.

Results in Millimeters:
Loading content.
1 cm = 10 mm

How to Convert Centimeters to Millimeters

Tape measures can be used to measure units of length, and a calculator can be used to convert to another unit

Convert centimeters to millimeters with this simple formula:

millimeters = centimeters × 10

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

For example, here's how to convert 5 centimeters to millimeters using the formula above.
5 cm = (5 × 10) = 50 mm

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

Centimeters and millimeters are both units used to measure length. Learn more about length and find more length measurement conversion calculators. Centimeters are a metric measurement and can be abbreviated as cm, for example 1 cm. Millimeters are a metric measurement and can be abbreviated as mm, for example 1 mm. 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.

To get an idea of how small a millimeter is, a dime is 1.35mm thick.

Internationally the centimeter is actually spelled centimetre and it's equal to 10 millimeters, .01 meters, or .393701 inches. Metric rulers have 30 cm 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.

A pencil is just about 1cm thick and is a good reference point for a centimeter's actual size

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.

centimeters and millimeters are units used to measure length
Convert Millimeters to Centimeters

Centimeter Measurements and Equivalent Millimeter Conversions

Common centimeter values converted to the equivalent millimeter value
Centimeters Millimeters
1 cm 10 mm
2 cm 20 mm
3 cm 30 mm
4 cm 40 mm
5 cm 50 mm
6 cm 60 mm
7 cm 70 mm
8 cm 80 mm
9 cm 90 mm
10 cm 100 mm
11 cm 110 mm
12 cm 120 mm
13 cm 130 mm
14 cm 140 mm
15 cm 150 mm
16 cm 160 mm
17 cm 170 mm
18 cm 180 mm
19 cm 190 mm
20 cm 200 mm
21 cm 210 mm
22 cm 220 mm
23 cm 230 mm
24 cm 240 mm
25 cm 250 mm
26 cm 260 mm
27 cm 270 mm
28 cm 280 mm
29 cm 290 mm
30 cm 300 mm
31 cm 310 mm
32 cm 320 mm
33 cm 330 mm
34 cm 340 mm
35 cm 350 mm
36 cm 360 mm
37 cm 370 mm
38 cm 380 mm
39 cm 390 mm
40 cm 400 mm

More Centimeter Length Conversions

US Customary & Imperial Units
Convert to Miles
1 cm is equal to 6.2137E-6 miles
Convert to Yards
1 cm is equal to 0.010936 yards
Convert to Feet
1 cm is equal to 0.032808 feet
Convert to Inches
1 cm is equal to 0.393701 inches
SI Units
Convert to Kilometers
1 cm is equal to 1.0E-5 kilometers
Convert to Meters
1 cm is equal to 0.01 meters
Convert to Micrometers
1 cm is equal to 10,000 micrometers
Convert to Nanometers
1 cm is equal to 10,000,000 nanometers