Acre Conversions

Use this easy and mobile-friendly calculator to convert between Acres and other units of Area.
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1 Acre =
6,272,640 Square Inches
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Acres
An acre is a unit of area equal to 1/640th of a square mile. It is about the size of an American football field.
Abbreviation: ac
Square Inches
A square inch is a unit of area. It is the size of a square that is one inch on a side. It is 1/144th of a square foot, or exactly 6.4516 square centimeters.
Common abbreviations: sq in, inch², in², in^2