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 1040 miles into kilometers we have to multiply 1040 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

1040 mi → L_(km)

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

L_(km) = 1040 mi × 1.609344 km

L_(km) = 1673.71776 km

The final result is:

1040 mi → 1673.71776 km

We conclude that 1040 miles is equivalent to 1673.71776 kilometers:

1040 miles = 1673.71776 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 0.00059747230022821 × 1040 miles.

Another way is saying that 1040 miles is equal to 1 ÷ 0.00059747230022821 kilometers.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one thousand forty miles is approximately one thousand six hundred seventy-three point seven one eight kilometers:

1040 mi ≅ 1673.718 km

An alternative is also that one kilometer is approximately zero point zero zero one times one thousand forty 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