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Millimeters to Centimeters Converter

Convert millimeters (mm) to centimeters (cm), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Convert a length from one unit to another. For inches, feet and yards you also get feet and inches with a tape-measure fraction.

About valueEnter a number, a fraction such as 3/8, a mixed number such as 1 3/8, or simple arithmetic such as 2*3.
About to unitUnit to convert into.
About round inches to nearestSmallest inch fraction used when showing feet and inches.
Result
Result
0.1 cm
miles
6.21371192237 × 10^-7
yards
0.00109361329834
feet
0.00328083989501
inches
0.0393700787402
kilometers
1 × 10^-6
meters
0.001
micrometers
1000
nanometers
1000000
light-years
1.05700083402 × 10^-19
US survey feet
0.00328083333333

1 mm = 0.1 cm

Show the working
  1. 1 mm = 0.1 cm
  2. 1 × 0.1 = 0.1 cm

How to convert millimeters to centimeters

1 mm = 0.1 cm, so multiply by 0.1 to go from millimeters to centimeters. Going the other way, 1 cm = 10 mm.

cm = mm × 0.1
mm = cm × 10

Worked example:

1 mm = 0.1 cm
5 × 0.1 = 0.5 cm

Millimeters to centimeters table

MillimetersCentimeters
1 mm0.1 cm
2 mm0.2 cm
3 mm0.3 cm
4 mm0.4 cm
5 mm0.5 cm
6 mm0.6 cm
7 mm0.7 cm
8 mm0.8 cm
9 mm0.9 cm
10 mm1 cm
15 mm1.5 cm
20 mm2 cm
25 mm2.5 cm
30 mm3 cm
40 mm4 cm
50 mm5 cm
75 mm7.5 cm
100 mm10 cm
250 mm25 cm
500 mm50 cm
1000 mm100 cm

About the units

Millimeters (mm)
Millimeters, a metric unit. Definition: BIPM SI Brochure (SI prefixes).
Centimeters (cm)
Centimeters, a metric unit. Definition: BIPM SI Brochure (SI prefixes).

Formula version 0.1.0Reviewed