Conversion formula

The conversion factor from miles to feet is 5280, which means that 1 mile is equal to 5280 feet:

1 mi = 5280 ft

To convert 420 miles into feet we have to multiply 420 by the conversion factor in order to get the length amount from miles to feet. We can also form a simple proportion to calculate the result:

1 mi → 5280 ft

420 mi → L_(ft)

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

L_(ft) = 420 mi × 5280 ft

L_(ft) = 2217600 ft

The final result is:

420 mi → 2217600 ft

We conclude that 420 miles is equivalent to 2217600 feet:

420 miles = 2217600 feet

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 foot is equal to 4.5093795093795E-7 × 420 miles.

Another way is saying that 420 miles is equal to 1 ÷ 4.5093795093795E-7 feet.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty miles is approximately two million two hundred seventeen thousand six hundred feet:

420 mi ≅ 2217600 ft

An alternative is also that one foot is approximately zero times four hundred twenty miles.

Conversion table

miles to feet chart

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