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Millimeters to centimeters

1 millimeter in centimeters
1 mm = 0.1 cm
cm = mm × 1/10

To convert millimeters to centimeters, multiply by 0.1. The table below gives the values people look up most often, and the converter works for any number.

Millimeters to centimeters table

Common millimeter values converted to centimeters.
Millimeters Centimeters
1 mm 0.1
2 mm 0.2
3 mm 0.3
4 mm 0.4
5 mm 0.5
10 mm 1
15 mm 1.5
20 mm 2
25 mm 2.5
30 mm 3
40 mm 4
50 mm 5
75 mm 7.5
100 mm 10
250 mm 25
500 mm 50
1,000 mm 100

How the conversion works

The relationship is cm = mm × 1/10. Both units measure length, so the conversion is a fixed factor that never changes.

Common questions

How many centimeters are in one millimeter?
One millimeter equals 0.1 centimeters. cm = mm × 1/10.
How do you convert millimeters to centimeters?
Use cm = mm × 1/10. So 10 mm is 1 cm.
How many millimeters are in one centimeter?
One centimeter equals 10 millimeters, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked