42 centimeters in kilometers

Conversion formula
How to convert 42 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: 42 ⁢ cm = 0.00042 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 2380.95238095238 times 42 centimeters.

It can also be expressed as: 42 centimeters is equal to $\frac{1}{\mathrm{2380.95238095238}}$ kilometers.

Approximation

An approximate numerical result would be: forty-two centimeters is about zero kilometers, or alternatively, a kilometer is about two thousand, three hundred and eighty point nine four times forty-two centimeters.