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 1221 decimeters into kilometers we have to multiply 1221 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

1221 dm → L_(km)

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

L_(km) = 1221 dm × 0.0001 km

L_(km) = 0.1221 km

The final result is:

1221 dm → 0.1221 km

We conclude that 1221 decimeters is equivalent to 0.1221 kilometers:

1221 decimeters = 0.1221 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 8.1900081900082 × 1221 decimeters.

Another way is saying that 1221 decimeters is equal to 1 ÷ 8.1900081900082 kilometers.

Approximate result

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

1221 dm ≅ 0.122 km

An alternative is also that one kilometer is approximately eight point one nine times one thousand two 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