Centimeters to Decimeters (cm to dm) Converter

How to convert centimeters to decimeters

Formuladm = cm × 0.1

Multiply the value in centimeters by 0.1. To go the other way, multiply by 10 (or divide by 0.1).

A centimeter is smaller than a decimeter: it takes 10 centimeters to make one decimeter.

Worked examples

1 centimeter1 cm × 0.1 = 0.1 dm
5 centimeters5 cm × 0.1 = 0.5 dm
10 centimeters10 cm × 0.1 = 1 dm
20 centimeters20 cm × 0.1 = 2 dm
100 centimeters100 cm × 0.1 = 10 dm

Centimeters to decimeters conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Centimeters to decimeters: 0.1–10 cm
Centimeters (cm)	Decimeters (dm)
0.1 cm	0.01 dm
0.25 cm	0.025 dm
0.5 cm	0.05 dm
1 cm	0.1 dm
2 cm	0.2 dm
3 cm	0.3 dm
4 cm	0.4 dm
5 cm	0.5 dm
6 cm	0.6 dm
7 cm	0.7 dm
8 cm	0.8 dm
9 cm	0.9 dm
10 cm	1 dm

Centimeters to decimeters: 12–1,000 cm
Centimeters (cm)	Decimeters (dm)
12 cm	1.2 dm
15 cm	1.5 dm
20 cm	2 dm
25 cm	2.5 dm
30 cm	3 dm
40 cm	4 dm
50 cm	5 dm
75 cm	7.5 dm
100 cm	10 dm
250 cm	25 dm
500 cm	50 dm
1,000 cm	100 dm

About the units

Centimeter (cm)

One hundredth of a metre. Centimetres are the everyday metric unit for body height, clothing sizes and small objects; a standard paper clip is about 3 cm long. One centimeter equals 0.01 meters (m).

Decimeter (dm)

The decimeter (dm) is a unit of length in the International System of Units (SI). One decimeter equals 0.1 meters (m).

Frequently asked questions

How many decimeters are in one centimeter?

There are 0.1 decimeters in one centimeter, and this value is exact by definition.

How do I convert centimeters to decimeters?

Multiply the number of centimeters by 0.1. For example, 10 cm × 0.1 = 1 dm.

How many centimeters are in one decimeter?

One decimeter equals 10 centimeters. That is the reverse factor, 1 ÷ 0.1.

What is 10 centimeters in decimeters?

10 cm = 1 dm.

Is this cm to dm converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Centimeters to Decimeters Converter