Convert Centimetre to Decimetre
Turn Centimetres into Decimetres in an instant. Type a value below to get an accurate cm → dm result, with the formula and a quick-reference table.
1 cm = 0.1 dm
Quick answer: 1 Centimetre = 0.1 Decimetre
Centimetre to Decimetre conversion table
| Centimetre (cm) | Decimetre (dm) |
|---|---|
| 1 cm | 0.1 dm |
| 2 cm | 0.2 dm |
| 5 cm | 0.5 dm |
| 10 cm | 1 dm |
| 20 cm | 2 dm |
| 50 cm | 5 dm |
| 100 cm | 10 dm |
| 500 cm | 50 dm |
| 1,000 cm | 100 dm |
How to convert Centimetre to Decimetre
To convert Centimetres to Decimetres, multiply the value by 0.1.
- Take your measurement in Centimetres.
- Multiply it by 0.1 — the number of Decimetres in one Centimetre.
- The result is the same amount, expressed in Decimetres.
To go the other way, multiply Decimetres by 10 — or simply divide by 0.1.
For example, a school ruler is about 30 cm, which is 3 dm.
About Centimetre and Decimetre
A centimetre is one-hundredth of a metre, or 10 millimetres. It is the unit most people reach for to measure height, paper sizes and small objects in metric countries.
A decimetre is one-tenth of a metre, or 10 centimetres. It is rarely used in daily life but appears in science — a cubic decimetre is exactly one litre.
Both the Centimetre and the Decimetre are metric units, so converting between them is just a change of scale: one Centimetre equals 0.1 Decimetres, and the Decimetre is the larger unit.
Other length conversions
Frequently asked questions
How many Decimetres are in a Centimetre?
1 Centimetre equals 0.1 Decimetre (cm → dm). To convert any amount, multiply the number of Centimetres by 0.1.
How do I convert Centimetre to Decimetre?
Enter the number of Centimetres in the converter above and read the result in Decimetres. It applies the exact cm → dm factor instantly, with full precision.
Is the Centimetre to Decimetre converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined length factors and full floating-point precision, then rounds the display to a clean, readable number.