To convert acres to square feet, input the acre into a metric conversions calculator, and the calculator automatically converts acreage to square feet. Perform the calculation manually by equating one acre to 4,840 square yards or 43,560 square feet.
Historically, an acre is the amount of land that can be plowed in a single day by one yoke of oxen. The original amount varied but eventually was set at its current measurement. The land shape of an acre can be a rectangle, square, circle or any other shape, as long as the total square footage equals 43,560.
Some uses for an acre of land include farming and raising livestock. For example, an acre of land can yield as much as 40 bushels of wheat. An single acre of Kansas wheat can produce enough wheat to feed about 9,000 people a day.
Another example of how acreage can be used is demonstrated by Urban Homestead project. Urban Homestead demonstrates that a 1/5-acre, or 8,712-square-foot, plot of land with a house can produce nearly 6,000 pounds of food per year for consumption, animal feed and for sale. The actual area of the garden is 1/10 acre, or 4,356 square feet. The land also is used to raise small livestock, keep bees, raise tilapia and teach the community about the practice of sustainable living, according to Urban Homestead.