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 1688 feet into miles we have to multiply 1688 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

1688 ft → L_(mi)

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

L_(mi) = 1688 ft × 0.00018939393939394 mi

L_(mi) = 0.31969696969697 mi

The final result is:

1688 ft → 0.31969696969697 mi

We conclude that 1688 feet is equivalent to 0.31969696969697 miles:

1688 feet = 0.31969696969697 miles

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 mile is equal to 3.1279620853081 × 1688 feet.

Another way is saying that 1688 feet is equal to 1 ÷ 3.1279620853081 miles.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one thousand six hundred eighty-eight feet is approximately zero point three two miles:

1688 ft ≅ 0.32 mi

An alternative is also that one mile is approximately three point one two eight times one thousand six hundred eighty-eight 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