## Conversion formula

The conversion factor from decimeters to millimeters is 100, which means that 1 decimeter is equal to 100 millimeters:

1 dm = 100 mm

To convert 5 decimeters into millimeters we have to multiply 5 by the conversion factor in order to get the length amount from decimeters to millimeters. We can also form a simple proportion to calculate the result:

1 dm → 100 mm

5 dm → L(mm)

Solve the above proportion to obtain the length L in millimeters:

L(mm) = 5 dm × 100 mm

L(mm) = 500 mm

The final result is:

5 dm → 500 mm

We conclude that 5 decimeters is equivalent to 500 millimeters:

5 decimeters = 500 millimeters ## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 0.002 × 5 decimeters.

Another way is saying that 5 decimeters is equal to 1 ÷ 0.002 millimeters.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that five decimeters is approximately five hundred millimeters:

5 dm ≅ 500 mm

An alternative is also that one millimeter is approximately zero point zero zero two times five decimeters.

## Conversion table

### decimeters to millimeters chart

For quick reference purposes, below is the conversion table you can use to convert from decimeters to millimeters

decimeters (dm) millimeters (mm)
6 decimeters 600 millimeters
7 decimeters 700 millimeters
8 decimeters 800 millimeters
9 decimeters 900 millimeters
10 decimeters 1000 millimeters
11 decimeters 1100 millimeters
12 decimeters 1200 millimeters
13 decimeters 1300 millimeters
14 decimeters 1400 millimeters
15 decimeters 1500 millimeters