## 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 8 decimeters into millimeters we have to multiply 8 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

8 dm → L(mm)

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

L(mm) = 8 dm × 100 mm

L(mm) = 800 mm

The final result is:

8 dm → 800 mm

We conclude that 8 decimeters is equivalent to 800 millimeters:

8 decimeters = 800 millimeters

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 0.00125 × 8 decimeters.

Another way is saying that 8 decimeters is equal to 1 ÷ 0.00125 millimeters.

## Approximate result

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

8 dm ≅ 800 mm

An alternative is also that one millimeter is approximately zero point zero zero one times eight 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)
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
16 decimeters 1600 millimeters
17 decimeters 1700 millimeters
18 decimeters 1800 millimeters