How do you convert centimeters to millimeters?

To convert centimeters to millimeters, multiply by 10. For example, 31 cm is 310 mm.

How many millimeters are in a centimeter?

There are 10 millimeters in one centimeter.

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Converters · Length

31 Centimeters to Millimeters

31 cm =

310 mm

31 centimeters equals 310 millimeters

How to convert centimeters to millimeters

To get millimeters, multiply by 10.

mm = cm × 10

Worked example: 31 × 10 = 310 mm.

Going the other way, multiply by 0.1 — one millimeter is 0.1 centimeters.

Values near 31 cm

Centimeter	Millimeter
15.5 cm	155 mm
29 cm	290 mm
30 cm	300 mm
32 cm	320 mm
33 cm	330 mm
62 cm	620 mm

Centimeter to Millimeter — common values

Centimeter	Millimeter
1 cm	10 mm
2 cm	20 mm
3 cm	30 mm
5 cm	50 mm
10 cm	100 mm
25 cm	250 mm
50 cm	500 mm
100 cm	1000 mm

Convert Centimeter to other units

cm → m cm → km cm → mm cm → mi cm → yd cm → ft cm → in cm → nmi

← Reverse: Millimeter to Centimeter

Questions

How do you convert centimeters to millimeters?: To convert centimeters to millimeters, multiply by 10. For example, 31 cm is 310 mm.
How many millimeters are in a centimeter?: There are 10 millimeters in one centimeter.
How do you convert millimeters back to centimeters?: Go the other way: multiply by 0.1. One millimeter is 0.1 centimeters.

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