Conversion formula

The conversion factor from feet to miles is 0.00018939393939394, which means that 1 foot is equal to 0.00018939393939394 miles:

1 ft = 0.00018939393939394 mi

To convert 420.5 feet into miles we have to multiply 420.5 by the conversion factor in order to get the length amount from feet to miles. We can also form a simple proportion to calculate the result:

1 ft → 0.00018939393939394 mi

420.5 ft → L_(mi)

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

L_(mi) = 420.5 ft × 0.00018939393939394 mi

L_(mi) = 0.079640151515152 mi

The final result is:

420.5 ft → 0.079640151515152 mi

We conclude that 420.5 feet is equivalent to 0.079640151515152 miles:

420.5 feet = 0.079640151515152 miles

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 mile is equal to 12.556480380499 × 420.5 feet.

Another way is saying that 420.5 feet is equal to 1 ÷ 12.556480380499 miles.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty point five feet is approximately zero point zero eight miles:

420.5 ft ≅ 0.08 mi

An alternative is also that one mile is approximately twelve point five five six times four hundred twenty point five feet.

Conversion table

feet to miles chart

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