315 decimeters in kilometers

Conversion formula
How to convert 315 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: 315 ⁢ dm = 0.0315 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 31.7460317460317 times 315 decimeters.

It can also be expressed as: 315 decimeters is equal to $\frac{1}{\mathrm{31.7460317460317}}$ kilometers.

Approximation

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