How do you convert centimeters to millimeters?

To convert centimeters to millimeters, multiply by 10. For example, 0.4 cm is 4 mm.

How many millimeters are in a centimeter?

There are 10 millimeters in one centimeter.

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Converters · Length

0.4 Centimeters to Millimeters

0.4 cm =

4 mm

0.4 centimeters equals 4 millimeters

How to convert centimeters to millimeters

To get millimeters, multiply by 10.

mm = cm × 10

Worked example: 0.4 × 10 = 4 mm.

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

Values near 0.4 cm

Centimeter	Millimeter
0.32 cm	3.2 mm
0.36 cm	3.6 mm
0.44 cm	4.4 mm
0.48 cm	4.8 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, 0.4 cm is 4 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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