Square foot (ft²)
Definition: A square foot (symbol: ft²) is the area of a square with sides of one foot. It equals exactly 0.09290304 square meters.
History/origin: The square foot evolved with the foot as a natural area unit in the imperial system and became central to building, housing, and property measurement in English-speaking countries.
Current use: Square feet are widely used in the United States and Canada for apartments, houses, offices, flooring, roofing, and construction estimates.


