Convert acres to square feet instantly.
Definition: An acre (symbol: ac) is a unit of land area equal to 4,046.8564224 square meters, 43,560 square feet, or 1/640 of a square mile.
History/origin: The acre dates back to medieval England, where it was roughly the amount of land a team of oxen could plough in a day. It remained a practical land unit even after formal standardization.
Current use: Acres are widely used in the United States, Canada, and the UK for farmland, rural property, estates, and large plots of land.
Definition: The square foot measures area using a 12-inch by 12-inch square. By international agreement, one ft² is exactly 0.09290304 m².
History/origin: Foot-based area took hold in building trades because room dimensions were already measured in feet, making ft² a practical unit for floors, walls, and property.
Current use: Ft² shows up in home listings, rental ads, office planning, tile and carpet orders, roofing quotes, HVAC sizing, and many North American construction documents.
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