Square feet (ft²) to Square miles (mi²) Conversion
Square feet
The square foot is a unit of area equal to exactly 0.09290304 square metres (the square of 0.3048 m). It is the primary unit for measuring floor area and property size in the United States and United Kingdom, and appears in real estate listings, construction blueprints, and rental agreements. Average apartment sizes in the US are commonly described in square feet, where a studio apartment might be 400–600 ft².
Square miles
The square mile is a unit of area equal to exactly 2,589,988.110336 square metres (approximately 2.59 km²). It is the standard unit for measuring large land areas, population density, and political jurisdictions in the United States and United Kingdom. One square mile contains exactly 640 acres — the basis of the US Public Land Survey System that structured much of North American land division.
| Square feet (ft²) | Square miles (mi²) |
|---|---|
| 0.1 ft² | 3.5870064279155E-9 mi² |
| 1 ft² | 3.5870064279155E-8 mi² |
| 2 ft² | 7.174012855831E-8 mi² |
| 3 ft² | 1.0761019283747E-7 mi² |
| 5 ft² | 1.7935032139578E-7 mi² |
| 10 ft² | 3.5870064279155E-7 mi² |
| 20 ft² | 7.174012855831E-7 mi² |
| 30 ft² | 1.0761019283747E-6 mi² |
| 50 ft² | 1.7935032139578E-6 mi² |
| 100 ft² | 3.5870064279155E-6 mi² |
| 1000 ft² | 3.5870064279155E-5 mi² |