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 1640 feet into miles we have to multiply 1640 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

1640 ft → L_(mi)

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

L_(mi) = 1640 ft × 0.00018939393939394 mi

L_(mi) = 0.31060606060606 mi

The final result is:

1640 ft → 0.31060606060606 mi

We conclude that 1640 feet is equivalent to 0.31060606060606 miles:

1640 feet = 0.31060606060606 miles

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 mile is equal to 3.219512195122 × 1640 feet.

Another way is saying that 1640 feet is equal to 1 ÷ 3.219512195122 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 forty feet is approximately zero point three one one miles:

1640 ft ≅ 0.311 mi

An alternative is also that one mile is approximately three point two two times one thousand six hundred forty 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