What is the acre equivalent of one acre in square feet?

• A. 10,000 ft^2
• B. 43,560 ft^2
• C. 1,000 ft^2
• D. 4,356 ft^2

Answer: (B)

An acre is a standard land area unit in the U.S. and equals 43,560 square feet. This comes from the traditional surveying setup: it’s the area of a rectangle 660 feet long by 66 feet wide, and 660 × 66 equals 43,560. Knowing this helps you see why 43,560 is the correct figure for one acre. The other numbers are different fractions or scales of area: 4,356 square feet is one-tenth of an acre, 10,000 square feet is a bit under a quarter of an acre, and 1,000 square feet is a very small area (about 0.023 acres). So the acre’s square-foot equivalent is 43,560.