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Convert millimeter to centimeter

Here you can quickly calculate how many centimeter fit in one millimeter.

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  • 1 mm = 0.1 cm
  • 1 cm = 10 mm

Millimeter to centimeter conversion table

millimeter centimeter
1 0.1
2 0.2
5 0.5
10 1
20 2
50 5
100 10

Millimeter to centimeter formula

To convert millimeter to centimeter, multiply by 0.1.

1 mm = 0.1 cm
Example: 1 millimeter = 0.1 centimeter

Common length conversion mistakes

  • Rounding the inch to 2.5 cm feels harmless, but the exact value is 2.54 cm, a 1.6% error. Over a 100-inch measurement that is already 4 cm off, and the error compounds in chained calculations. Use the exact definition: 1 inch = 2.54 cm, exactly.

Quick millimeter and centimeter conversion quiz

Score: 0

1 millimeter equals 0.115 centimeter.

Correct answer: 1 millimeter = 0.1 centimeter.

119 millimeter equals 13.1 centimeter.

Correct answer: 119 millimeter = 11.9 centimeter.

8.2 millimeter equals 0.82 centimeter.

Correct answer: 8.2 millimeter = 0.82 centimeter.

12.9 centimeter equals 129 millimeter.

Correct answer: 12.9 centimeter = 129 millimeter.

More length conversions