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 489.7 decimeters into kilometers we have to multiply 489.7 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

489.7 dm → L_(km)

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

L_(km) = 489.7 dm × 0.0001 km

L_(km) = 0.04897 km

The final result is:

489.7 dm → 0.04897 km

We conclude that 489.7 decimeters is equivalent to 0.04897 kilometers:

489.7 decimeters = 0.04897 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 20.420665713702 × 489.7 decimeters.

Another way is saying that 489.7 decimeters is equal to 1 ÷ 20.420665713702 kilometers.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred eighty-nine point seven decimeters is approximately zero point zero four nine kilometers:

489.7 dm ≅ 0.049 km

An alternative is also that one kilometer is approximately twenty point four two one times four hundred eighty-nine point seven 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