12 millimeters in kilometers

Conversion formula
How to convert 12 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: 12 ⁢ mm = 1.2e-05 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 83333.3333333333 times 12 millimeters.

It can also be expressed as: 12 millimeters is equal to $\frac{1}{\mathrm{83333.3333333333}}$ kilometers.

Approximation

An approximate numerical result would be: twelve millimeters is about zero kilometers, or alternatively, a kilometer is about eighty-three thousand, three hundred and thirty-three point three three times twelve millimeters.