425 miles in kilometers

Conversion formula
How to convert 425 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: 425 ⁢ mile = 683.9712000000001 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 0.00146204986408784 times 425 miles.

It can also be expressed as: 425 miles is equal to $\frac{1}{\mathrm{0.00146204986408784}}$ kilometers.

Approximation

An approximate numerical result would be: four hundred and twenty-five miles is about six hundred and eighty-three point nine seven kilometers, or alternatively, a kilometer is about zero times four hundred and twenty-five miles.