Conversion formula

The conversion factor from feet to inches is 12, which means that 1 foot is equal to 12 inches:

1 ft = 12 in

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

1 ft → 12 in

420 ft → L_(in)

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

L_(in) = 420 ft × 12 in

L_(in) = 5040 in

The final result is:

420 ft → 5040 in

We conclude that 420 feet is equivalent to 5040 inches:

420 feet = 5040 inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 0.0001984126984127 × 420 feet.

Another way is saying that 420 feet is equal to 1 ÷ 0.0001984126984127 inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty feet is approximately five thousand forty inches:

420 ft ≅ 5040 in

An alternative is also that one inch is approximately zero times four hundred twenty feet.

Conversion table

feet to inches chart

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