How Many Millimeters in a Decimeter?

Quick Answer
1 Decimeter = 100 Millimeters

1 dm = 100 mm

Formula

mm = dm × 100

Conversion Table

Decimeters (dm)Millimeters (mm)
1 dm100 mm
2 dm200 mm
5 dm500 mm
10 dm1,000 mm
20 dm2,000 mm
50 dm5,000 mm
100 dm10,000 mm
500 dm50,000 mm
1,000 dm100,000 mm

Worked Examples

Convert 5 dm to mm:
5 dm × 100 = 500 mm
Convert 10 dm to mm:
10 dm × 100 = 1,000 mm
Convert 50 dm to mm:
50 dm × 100 = 5,000 mm

FAQ

How many Millimeters are in 1 Decimeter?
There are 100 Millimeters in 1 Decimeter. Formula: mm = dm × 100.
How to convert Decimeters to Millimeters?
To convert Decimeters to Millimeters, multiply the number of Decimeters by 100. For example, 10 dm = 1,000 mm.
How many Millimeters are in 100 Decimeters?
There are 10,000 Millimeters in 100 Decimeters. Calculation: 100 × 100 = 10,000.