Convert square feet to square miles instantly.
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.
Definition: The square mile is a large imperial and US customary area unit. It covers a one-mile by one-mile square, equal to 27,878,400 ft² or 640 acres.
History/origin: Surveying, county records, and regional maps in mile-using countries made mi² a natural unit for describing broad territories before metric area units became widespread.
Current use: Mi² is common in US geography, municipal profiles, park statistics, lake areas, county data, population density figures, and comparisons of large places.
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