Instant · Precise · Universal
23 units available
6 categories total
To convert mi² to km²: multiply by 2.59. To acres: multiply by 640. To hectares: multiply by 259.
1 mi² = 640 acres = 27,878,400 ft² = 2.59 km² = 259 ha.
For example, 1 Square Mile (mi²) = 0.02777777778 Township (township).
| Square Mile (mi²) | Township (township) |
|---|---|
| 0.1 | 0.002777777778 |
| 0.5 | 0.01388888889 |
| 1 | 0.02777777778 |
| 2 | 0.05555555556 |
| 5 | 0.1388888889 |
| 10 | 0.2777777778 |
| 25 | 0.6944444444 |
| 50 | 1.388888889 |
| 100 | 2.777777778 |
| 500 | 13.88888889 |
| 1000 | 27.77777778 |
The square mile is an imperial unit of area equal to the area of a square with sides of one mile (2.59 km²).
1 mi² = 640 acres = 27,878,400 ft² = 2.59 km² = 259 ha.
To convert mi² to km²: multiply by 2.59. To acres: multiply by 640. To hectares: multiply by 259.
City areas, county sizes, population density, land surveys, and geographic comparisons.
Manhattan is about 22.8 mi². The state of Texas is 268,596 mi². Rhode Island (smallest US state) is 1,214 mi².
1 mi ≈ 1.609 km, but 1 mi² ≈ 2.59 km² (not 1.609). Area conversion squares the factor.
1 mi² = 640 acres. This 'section' (640 acres) is the basis of the US Public Land Survey System grid.
A township (survey) is a unit of land area equal to 36 square miles (93.24 km²), used in the US Public Land Survey System.
1 township = 36 sections = 36 mi² = 23,040 acres ≈ 93.24 km².
To convert townships to sections: multiply by 36. To acres: multiply by 23,040. To km²: multiply by 93.24.
Legal land descriptions in the western US, mineral rights boundaries, and county subdivision.
Indiana was the first state fully surveyed using the township system (1799–1834). The grid is still visible in satellite imagery.
Confusing 'township' (the survey unit = 36 mi²) with 'township' as a political subdivision, which can vary in size.
A township = 6 mi × 6 mi = 36 sections. Each section = 1 mi² = 640 acres. It's a nested grid system.



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