Conversion formula

The conversion factor from decimeters to kilometers is 0.0001, which means that 1 decimeter is equal to 0.0001 kilometers:

1 dm = 0.0001 km

To convert 20 decimeters into kilometers we have to multiply 20 by the conversion factor in order to get the length amount from decimeters to kilometers. We can also form a simple proportion to calculate the result:

1 dm → 0.0001 km

20 dm → L_(km)

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

L_(km) = 20 dm × 0.0001 km

L_(km) = 0.002 km

The final result is:

20 dm → 0.002 km

We conclude that 20 decimeters is equivalent to 0.002 kilometers:

20 decimeters = 0.002 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 500 × 20 decimeters.

Another way is saying that 20 decimeters is equal to 1 ÷ 500 kilometers.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty decimeters is approximately zero point zero zero two kilometers:

20 dm ≅ 0.002 km

An alternative is also that one kilometer is approximately five hundred times twenty decimeters.

Conversion table

decimeters to kilometers chart

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