Convert Square Mile (mi²) to Acre

Instantly convert Square Mile (mi²) to Acre using our reliable online area conversion tool for precise results.

Formula: To convert square miles to acres, multiply the area value in square miles by 640.
Square Mile (mi²)
A unit of area used to measure large land masses, equal to a square with 1-mile sides.
Acre
A unit of area commonly used in the US to measure land, equal to 43,560 square feet.

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