31 centimeters in kilometers

Conversion formula
How to convert 31 centimeters to kilometers?

We know (by definition) that: $1\mathrm{cm}=1e-05\mathrm{km}$

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

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

Conclusion: 31 ⁢ cm = 0.00031 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 3225.8064516129 times 31 centimeters.

It can also be expressed as: 31 centimeters is equal to $\frac{1}{\mathrm{3225.8064516129}}$ kilometers.

Approximation

An approximate numerical result would be: thirty-one centimeters is about zero kilometers, or alternatively, a kilometer is about three thousand, two hundred and twenty-five point eight zero times thirty-one centimeters.