How to convert decimeters to millimeters
1 decimeter is equal to 100 millimeters, and 1 millimeter is equal to 0.01 decimeters. To convert, multiply by the conversion factor:
millimeters = decimeters × 100
millimeters = decimeters ÷ 0.01Example: convert 15 dm to mm: 15 × 100 = 1,500 mm.
Decimeter to Millimeter conversion table
| Decimeter (dm) | Millimeter (mm) |
|---|---|
| 0.01 dm | 1 mm |
| 0.1 dm | 10 mm |
| 1 dm | 100 mm |
| 2 dm | 200 mm |
| 3 dm | 300 mm |
| 5 dm | 500 mm |
| 10 dm | 1,000 mm |
| 20 dm | 2,000 mm |
| 50 dm | 5,000 mm |
| 100 dm | 10,000 mm |
| 250 dm | 25,000 mm |
| 500 dm | 50,000 mm |
| 1,000 dm | 100,000 mm |
About the decimeter
A decimeter is one tenth of a meter (10 cm). A cube one decimeter on each side holds exactly one liter.
Symbol: dm · 1 dm = 0.1 m · Category: Metric (SI)
About the millimeter
A millimeter is one thousandth of a meter. It's the standard unit in engineering drawings, manufacturing, rainfall and screen and paper sizes.
Symbol: mm · 1 mm = 0.001 m · Category: Metric (SI)