How many square feet are in one acre?

• A. 40,000 ft^2
• B. 50,000 ft^2
• C. 43,560 ft^2
• D. 60,000 ft^2

Answer: (C)

Understanding how acres convert to square feet helps with land and water planning. An acre is defined as a rectangle 66 feet by 660 feet, so multiplying 66 by 660 gives 43,560 square feet. It’s also handy to know that this equals 4,840 square yards (since 43,560 ft^2 ÷ 9 = 4,840 yd^2) or 160 square rods (a rod is 16.5 feet, and 160 × 272.25 ft^2 = 43,560). This precise value—43,560 square feet—is the standard conversion for one acre. The other numbers are not the exact conversion.