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 8420 decimeters into kilometers we have to multiply 8420 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

8420 dm → L_(km)

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

L_(km) = 8420 dm × 0.0001 km

L_(km) = 0.842 km

The final result is:

8420 dm → 0.842 km

We conclude that 8420 decimeters is equivalent to 0.842 kilometers:

8420 decimeters = 0.842 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 1.187648456057 × 8420 decimeters.

Another way is saying that 8420 decimeters is equal to 1 ÷ 1.187648456057 kilometers.

Approximate result

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

8420 dm ≅ 0.842 km

An alternative is also that one kilometer is approximately one point one eight eight times eight thousand four hundred 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