An imperial measure for land. Equals 43,560 square feet; 4,047 square meters; or 0.047 hectares.
A measurement of land equal to 43,560 square feet.
The (English) acre is a unit of area equal to 43560 square feet, or 10 square chains, or 160 square poles. A square mile is 640 acres. The Scottish acre is 1.27 English acres.