Convert Centimeters to Decimetres
1 centimeter is 0.1 dm. One centimeter is exactly 0.1 decimetres.
One centimeter is 0.1 decimetres. To convert centimeters to decimetres, multiply by 0.1; to go the other way, divide by 0.1 or multiply by 10. The factor is exact rather than rounded: it follows from NIST. One hundredth of a meter, and the unit most of the world states height in.
Factor checked against the defining standard · How we check
- Centimeters × 0.1
1 * 0.10.1 dm
1 centimeter in every length unit
| Unit | Value | Exact factor |
|---|---|---|
| inches | 0.3937007874 in | × 0.393700787402 |
| feet | 0.03280839895 ft | × 0.0328083989501 |
| yards | 0.01093613298 yd | × 0.0109361329834 |
| miles | 0.000006213711922 mi | × 0.00000621371192237 |
| millimeters | 10 mm | × 10 |
| decimetres | 0.1 dm | × 0.1 |
| centimeters (as entered) | 1 cm | — |
| meters | 0.01 m | × 0.01 |
| kilometers | 0.00001 km | × 0.00001 |
| nautical miles | 0.000005399568035 nmi | × 0.00000539956803456 |
| micrometers | 10,000 µm | × 10,000 |
| nanometers | 10,000,000 nm | × 10,000,000 |
| thou | 393.7007874 thou | × 393.700787402 |
Factors are entered by hand from NIST rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: centimetres to decimetres is the British spelling of the same units — the metre and the litre are spelled that way outside the United States and the quantity does not change.
How do you convert centimeters to decimetres? The converter and the working
- 1.Take the measurement in centimeters.
- 2.Multiply by 0.1 — that is how many decimetres fit in one centimeter.
- 3.To go back the other way, divide by 0.1, or multiply by 10.
Worked example: 25 centimeters to decimetres
- Formula
- cm × 0.1 = dm
- Arithmetic
- 25 × 0.1 = 2.5 dm
- Answer
- 25 cm = 2.5 dm
The factor is exact, so this figure is exact too — only the display is rounded.
Centimeters to decimetres conversion table
| Centimeters | Decimetres |
|---|---|
| 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 |
| 12 cm | 1.2 dm |
| 15 cm | 1.5 dm |
| 20 cm | 2 dm |
| 25 cm | 2.5 dm |
| 50 cm | 5 dm |
| 100 cm | 10 dm |
| 200 cm | 20 dm |
| 300 cm | 30 dm |
| 500 cm | 50 dm |
| 1000 cm | 100 dm |
| 2000 cm | 200 dm |
| 5000 cm | 500 dm |
| 10000 cm | 1,000 dm |
What is a centimeter?
One hundredth of a meter, and the unit most of the world states height in.
What is a decimetre?
A tenth of a metre. Rare in speech and unavoidable in definitions: the litre is a cubic decimetre, which is where the millilitre and the cubic centimetre meet.
How many decimetres are in a centimeter?
One centimeter is 0.1 decimetres, exactly. Going the other way, one decimetre is 10 centimeters. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every length unit here
The whole group — 13 units with their symbols and the size of each one in meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a centimeter.
Source: NIST — international yard and pound agreement (inch = 25.4 mm exactly)
Cite this page
- APA
- Rule Calculator. (2026). Convert Centimeters to decimetres. Rule Calculator. https://rulecalculators.com/convert/centimeter-to-decimeter
- MLA
- "Convert Centimeters to decimetres." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/centimeter-to-decimeter.
- Chicago
- Rule Calculator. "Convert Centimeters to decimetres." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/centimeter-to-decimeter.
The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many decimetres are in a centimeter?
- 0.1. A tenth of a metre. Rare in speech and unavoidable in definitions: the litre is a cubic decimetre, which is where the millilitre and the cubic centimetre meet.
- How do I convert decimetres back to centimeters?
- Divide by 0.1, or multiply by 10 — they are the same operation.
Other length conversions
Decimetres to centimeters — the same conversion the other way.