Convert Centimeters to Millimeters

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

Results in Millimeters:

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

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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