How do you convert centimeters to millimeters?

To convert centimeters to millimeters, multiply by 10. For example, 9 cm is 90 mm.

How many millimeters are in a centimeter?

There are 10 millimeters in one centimeter.

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Converters · Length

9 Centimeters to Millimeters

9 cm =

90 mm

9 centimeters equals 90 millimeters

How to convert centimeters to millimeters

To get millimeters, multiply by 10.

mm = cm × 10

Worked example: 9 × 10 = 90 mm.

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

Values near 9 cm

Centimeter	Millimeter
4.5 cm	45 mm
7 cm	70 mm
8 cm	80 mm
10 cm	100 mm
11 cm	110 mm
18 cm	180 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, 9 cm is 90 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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