How do you convert centimeters to millimeters?

To convert centimeters to millimeters, multiply by 10. For example, 20 cm is 200 mm.

How many millimeters are in a centimeter?

There are 10 millimeters in one centimeter.

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Converters · Length

20 Centimeters to Millimeters

20 cm =

200 mm

20 centimeters equals 200 millimeters

How to convert centimeters to millimeters

To get millimeters, multiply by 10.

mm = cm × 10

Worked example: 20 × 10 = 200 mm.

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

Values near 20 cm

Centimeter	Millimeter
10 cm	100 mm
18 cm	180 mm
19 cm	190 mm
21 cm	210 mm
22 cm	220 mm
40 cm	400 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, 20 cm is 200 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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