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 8421 decimeters into kilometers we have to multiply 8421 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

8421 dm → L_(km)

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

L_(km) = 8421 dm × 0.0001 km

L_(km) = 0.8421 km

The final result is:

8421 dm → 0.8421 km

We conclude that 8421 decimeters is equivalent to 0.8421 kilometers:

8421 decimeters = 0.8421 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 1.1875074219214 × 8421 decimeters.

Another way is saying that 8421 decimeters is equal to 1 ÷ 1.1875074219214 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-one decimeters is approximately zero point eight four two kilometers:

8421 dm ≅ 0.842 km

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