42 miles in kilometers

Conversion formula
How to convert 42 miles to kilometers?

We know (by definition) that: $1\mathrm{mile}=1.609344\mathrm{km}$

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 ⁢ mile = 67.592448 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 0.014794552196127 times 42 miles.

It can also be expressed as: 42 miles is equal to $\frac{1}{\mathrm{0.014794552196127}}$ kilometers.

Approximation

An approximate numerical result would be: forty-two miles is about sixty-seven point five nine kilometers, or alternatively, a kilometer is about zero point zero one times forty-two miles.