Decimeters to Millimeters
Convert decimeters (dm) to millimeters (mm). Type in either box; the other updates as you go.
How to convert decimeters to millimeters
To convert decimeters to millimeters, multiply the number of decimeters by 100.
Example
Convert 5 decimeters to millimeters:
Decimeter to millimeter conversion chart
| Decimeters (dm) | Millimeters (mm) |
|---|---|
| 1 dm | 100 mm |
| 2 dm | 200 mm |
| 3 dm | 300 mm |
| 4 dm | 400 mm |
| 5 dm | 500 mm |
| 6 dm | 600 mm |
| 7 dm | 700 mm |
| 8 dm | 800 mm |
| 9 dm | 900 mm |
| 10 dm | 1,000 mm |
| 12 dm | 1,200 mm |
| 15 dm | 1,500 mm |
| 20 dm | 2,000 mm |
| 25 dm | 2,500 mm |
| 30 dm | 3,000 mm |
| 40 dm | 4,000 mm |
| 50 dm | 5,000 mm |
| 60 dm | 6,000 mm |
| 70 dm | 7,000 mm |
| 75 dm | 7,500 mm |
| 80 dm | 8,000 mm |
| 90 dm | 9,000 mm |
| 100 dm | 10,000 mm |
| 150 dm | 15,000 mm |
| 200 dm | 20,000 mm |
| 250 dm | 25,000 mm |
| 500 dm | 50,000 mm |
| 1,000 dm | 100,000 mm |
Going the other way? See the millimeters to decimeters chart.
About the units
Decimeter (dm)
A decimeter is one tenth of a meter, or 10 centimeters. A cube one decimeter on each side holds exactly one liter.
Millimeter (mm)
A millimeter is one thousandth of a meter. It is the unit on engineering drawings, rainfall gauges and the small marks of a metric ruler.
Frequently asked questions
How many millimeters are in a decimeter?
There are 100 millimeters in a decimeter.
How many decimeters are in a millimeter?
There are 0.01 decimeters in a millimeter.
How do you convert decimeters to millimeters?
To convert decimeters to millimeters, multiply the number of decimeters by 100.
What is 5 decimeters in millimeters?
5 decimeters equals 500 millimeters.
Convert between metric and imperial units of length and distance, from millimeters to miles. Open the length converter to see a value in every unit at once.