Convert Square Foot to Square Mile

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Conversion Formula:

mi² = ft² × 0

Convert Square Foot to Square Mile (ft² to mi²) instantly with accurate, readable results.

Convert between square meters, acres, square feet, hectares, and other common units with our Area Unit Converter. This intuitive unit conversion tool helps you calculate land size, floor space, and surface area across both metric and imperial systems. Whether you're working on real estate, construction, or geography tasks, our area unit conversion calculator ensures precise and instant results.

From unit

Square foot (ft²) - Imperial/US area unit

Square foot is an Imperial/US customary unit of area equal to a square 1 foot on a side. Used for floor space, building plans, and real estate listings.

  • Symbol: ft²
  • System: Imperial/US customary
  • Exact relations: 1 ft² = (0.3048 m)² = 0.09290304 m² (exact) = 144 in²
  • Other relations: 1 yd² = 9 ft²; 1 m² ≈ 10.7639104 ft²
  • Typical examples: room and apartment areas, carpet/laminate coverage, HVAC load calculations
To unit

Square mile (mi²) - large land area

Square mile is an Imperial/US customary unit of area equal to a square 1 mile on a side. Used for cities, counties, and large land tracts.

  • Symbol: mi²
  • System: Imperial/US customary
  • Exact relations: 1 mi² = (5280 ft)² = 27,878,400 ft² = 3,097,600 yd² = 640 acres
  • Metric equivalents: 1 mi² = (1609.344 m)² = 2,589,988.110336 m² ≈ 2.58999 km²
  • Typical examples: municipal areas, county sizes, watershed extents