What is the formula to calculate acres in a square mile?

Answer 1

Answer

There is no formula that equates one acre to one square mile. At least there is no TRUE formula that does so. I mean I could type 1 acre = 1 mi2, and that would be a formula, but it would not be true. Because one acre is NOT equal to one square mile, and never will be. In fact, it takes 640 acres to equal a square mile.

Answer 2

There are 640 acres in a square mile. This is because a square mile is equivalent to 1 mile by 1 mile, and 1 mile is equal to 5280 feet. Multiplying 5280 by 5280 gives you the square footage in a square mile, which is 27,878,400 square feet. Since 1 acre is equal to 43,560 square feet, dividing the total square footage in a square mile by the square footage in an acre (27,878,400 / 43,560) gives you 640 acres.

Answer 3

Square miles x 640 = acres

Answer 4

1 square mile = 640 acre