397 decimeters in kilometers

Conversion formula
How to convert 397 decimeters to kilometers?

We know (by definition) that: $1\mathrm{dm}=0.0001\mathrm{km}$

We can set up a proportion to solve for the number of kilometers.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 397 ⁢ dm = 0.0397 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 25.1889168765743 times 397 decimeters.

It can also be expressed as: 397 decimeters is equal to $\frac{1}{\mathrm{25.1889168765743}}$ kilometers.

Approximation

An approximate numerical result would be: three hundred and ninety-seven decimeters is about zero point zero four kilometers, or alternatively, a kilometer is about twenty-five point one nine times three hundred and ninety-seven decimeters.