Millimeters to centimeters converter (mm to cm)

mm to cm converter

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Enter a value on either side to convert.

There are exactly 10 millimeters in 1 centimeter, so converting millimeters to centimeters means dividing by 10, which is the same as multiplying by 0.1. The converter below works in both directions as you type, and the table covers the measurements that come up most often.

The exact factor from millimeters to centimeters is 0.1. One millimeter equals 0.1 centimeters, and the converter uses that full precision internally, rounding only what you see to 4 decimal places.

Worked example: 75 mm to cm

To convert 75 millimeters to centimeters, multiply by the exact factor 0.1:

75 × 0.1 = 7.5

Rounded to 4 decimal places, 75 mm is 7.5 cm.

mm to cm conversion table

mm	cm
1	0.1
2	0.2
3	0.3
4	0.4
5	0.5
6	0.6
7	0.7
8	0.8
9	0.9
10	1
11	1.1
12	1.2
13	1.3
14	1.4
15	1.5
16	1.6
17	1.7
18	1.8
19	1.9
20	2
25	2.5
30	3
40	4
50	5
100	10

Values are rounded to 4 decimal places with trailing zeros trimmed. Need a value that is not listed? Use the converter at the top of the page.

Back to the full unit converter

mm	cm
1	0.1
2	0.2
3	0.3
4	0.4
5	0.5
6	0.6
7	0.7
8	0.8
9	0.9
10	1
11	1.1
12	1.2
13	1.3
14	1.4
15	1.5
16	1.6
17	1.7
18	1.8
19	1.9
20	2
25	2.5
30	3
40	4
50	5
100	10

mm	cm
1	0.1
2	0.2
3	0.3
4	0.4
5	0.5
6	0.6
7	0.7
8	0.8
9	0.9
10	1
11	1.1
12	1.2
13	1.3
14	1.4
15	1.5
16	1.6
17	1.7
18	1.8
19	1.9
20	2
25	2.5
30	3
40	4
50	5
100	10

mm	cm
1	0.1
2	0.2
3	0.3
4	0.4
5	0.5
6	0.6
7	0.7
8	0.8
9	0.9
10	1
11	1.1
12	1.2
13	1.3
14	1.4
15	1.5
16	1.6
17	1.7
18	1.8
19	1.9
20	2
25	2.5
30	3
40	4
50	5
100	10