Conversion formula

The conversion factor from miles to kilometers is 1.609344, which means that 1 mile is equal to 1.609344 kilometers:

1 mi = 1.609344 km

To convert 425 miles into kilometers we have to multiply 425 by the conversion factor in order to get the length amount from miles to kilometers. We can also form a simple proportion to calculate the result:

1 mi → 1.609344 km

425 mi → L_(km)

Solve the above proportion to obtain the length L in kilometers:

L_(km) = 425 mi × 1.609344 km

L_(km) = 683.9712 km

The final result is:

425 mi → 683.9712 km

We conclude that 425 miles is equivalent to 683.9712 kilometers:

425 miles = 683.9712 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 0.0014620498640878 × 425 miles.

Another way is saying that 425 miles is equal to 1 ÷ 0.0014620498640878 kilometers.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty-five miles is approximately six hundred eighty-three point nine seven one kilometers:

425 mi ≅ 683.971 km

An alternative is also that one kilometer is approximately zero point zero zero one times four hundred twenty-five miles.

Conversion table

miles to kilometers chart

For quick reference purposes, below is the conversion table you can use to convert from miles to kilometers