45 kilometers in miles

Conversion formula
How to convert 45 kilometers to miles?

We know (by definition) that: $1\mathrm{km}\approx 0.62137119\mathrm{mile}$

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

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

Conclusion: 45 ⁢ km ≈ 27.96170355 ⁢ mile

Conversion in the opposite direction

The inverse of the conversion factor is that 1 mile is equal to 0.0357632 times 45 kilometers.

It can also be expressed as: 45 kilometers is equal to $\frac{1}{\mathrm{0.0357632}}$ miles.

Approximation

An approximate numerical result would be: forty-five kilometers is about twenty-seven point nine six miles, or alternatively, a mile is about zero point zero four times forty-five kilometers.