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 8420 feet into inches we have to multiply 8420 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

8420 ft → L_(in)

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

L_(in) = 8420 ft × 12 in

L_(in) = 101040 in

The final result is:

8420 ft → 101040 in

We conclude that 8420 feet is equivalent to 101040 inches:

8420 feet = 101040 inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 9.8970704671417E-6 × 8420 feet.

Another way is saying that 8420 feet is equal to 1 ÷ 9.8970704671417E-6 inches.

Approximate result

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

8420 ft ≅ 101040 in

An alternative is also that one inch is approximately zero times eight thousand 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