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1 Decimeters in Millimeters (dm to mm)

1 dm = 100 mm

1 Decimeters equals 100 Millimeters (1 dm = 100 mm).

Quick Facts: Decimeters to Millimeters

Conversion
1 Decimeters = 100 Millimeters
Formula
Convert Decimeters to Millimeters
Calculation
1 dm → 100 mm
Reverse
100 mm = 1 dm
Also equals
1,000,000,000 A · 10 cm · 0.005 ch · 0.055 ftm · 0.328 ft · 0.984 hh · 3.94 in · 0.1 m

How Much Is 1 dm?

1 dm is roughly A ruler length (300 mm)

How to Convert Decimeters to Millimeters

mm = dm × 100
Multiply the value in Decimeters by 100
  1. Start with 1 dm
  2. Calculate 1 × 100
  3. The result is 100 mm

Worked example: 1 dm = 100 mm

Common Decimeters to Millimeters Conversions

Decimeters (dm) Millimeters (mm) Status
0.01 dm 1 mm
0.05 dm 5 mm
0.1 dm 10 mm
0.25 dm 25 mm
0.5 dm 50 mm
1 dm 100 mm Current
2 dm 200 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
200 dm 20,000 mm
500 dm 50,000 mm
1,000 dm 100,000 mm

Want to learn more? Read our complete Decimeters to Millimeters guide with formula, FAQ, and background info.