55 millimeters in kilometers

Conversion formula
How to convert 55 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: 55 ⁢ mm = 5.4999999999999995e-05 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 18181.8181818182 times 55 millimeters.

It can also be expressed as: 55 millimeters is equal to $\frac{1}{\mathrm{18181.8181818182}}$ kilometers.

Approximation

An approximate numerical result would be: fifty-five millimeters is about zero kilometers, or alternatively, a kilometer is about eighteen thousand, one hundred and eighty-one point eight one times fifty-five millimeters.