45 millimeters in kilometers

Conversion formula
How to convert 45 millimeters to kilometers?

We know (by definition) that: $1\mathrm{mm}=1e-06\mathrm{km}$

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

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

Conclusion: 45 ⁢ mm = 4.4999999999999996e-05 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 22222.2222222222 times 45 millimeters.

It can also be expressed as: 45 millimeters is equal to $\frac{1}{\mathrm{22222.2222222222}}$ kilometers.

Approximation

An approximate numerical result would be: forty-five millimeters is about zero kilometers, or alternatively, a kilometer is about twenty-two thousand, two hundred and twenty-two point two two times forty-five millimeters.