Home > Conversions (Area) > Conversion tables from/to square mile > sq mi to ac Conversion Cheat Sheet (Interactive)
 From: Step: Decimals: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 You could also enter the values to convert and print directly on the table
 [Formula: ac = sq mi x 640]   [Printer friendly]  [Acres to Square miles]
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# Square miles to Acres Conversion Table

 sq mi  =  640 ac

# How to convert from Square miles to Acres

Since 1 square mile is equal to 640 acres, we could say that n square miles are equal to 640 times n acres. In other words, we could use the following formula:

acres = square miles x 640

For example, let's say that we want to convert 2 square miles to acres. Then, we just replace square miles in the abovementioned formula with 2:

acres = 2 x 640

That is, 2 square miles are equal to 1280.0 acres.