Square Foot (US Survey) to Township Converter
Unit Converter
Instant · Precise · Universal
23 units available
6 categories total
How to Convert Square Foot (US Survey) to Township
To convert US survey ft² to m²: multiply by 0.09290341. To international ft²: multiply by ~1.000004.
1 ft² (US) ≈ 0.09290341 m². Differs from international ft² (0.09290304 m²) by about 4 × 10⁻⁷ m².
For example, 1 Square Foot (US Survey) (ft² (US)) = 9.963947e-10 Township (township).
Square Foot (US Survey) to Township — Common Values
| Square Foot (US Survey) (ft² (US)) | Township (township) |
|---|---|
| 0.1 | 9.963947e-11 |
| 0.5 | 4.981973e-10 |
| 1 | 9.963947e-10 |
| 2 | 1.992789e-9 |
| 5 | 4.981973e-9 |
| 10 | 9.963947e-9 |
| 25 | 2.490987e-8 |
| 50 | 4.981973e-8 |
| 100 | 9.963947e-8 |
| 500 | 4.981973e-7 |
| 1000 | 9.963947e-7 |
About Square Foot (US Survey) (ft² (US))
Definition
The US survey square foot is a historical area unit based on the US survey foot (1200/3937 m), equal to approximately 0.09290341 m².
Mathematical Relationship
1 ft² (US) ≈ 0.09290341 m². Differs from international ft² (0.09290304 m²) by about 4 × 10⁻⁷ m².
Conversion Formula
To convert US survey ft² to m²: multiply by 0.09290341. To international ft²: multiply by ~1.000004.
Practical Applications
Historical property records and government land survey documents.
Interesting Facts
The difference from the international square foot is only about 0.4 mm² — negligible for a single measurement, but significant over millions of square feet.
Common Mistakes
Using the US survey foot in new work. Since 2023, only the international foot is valid in the US.
Educational Tips
The US survey foot existed because of a historical definition difference. It's now retired — use the international foot (exactly 0.3048 m).
About Township (township)
Definition
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.
Mathematical Relationship
1 township = 36 sections = 36 mi² = 23,040 acres ≈ 93.24 km².
Conversion Formula
To convert townships to sections: multiply by 36. To acres: multiply by 23,040. To km²: multiply by 93.24.
Practical Applications
Legal land descriptions in the western US, mineral rights boundaries, and county subdivision.
Interesting Facts
Indiana was the first state fully surveyed using the township system (1799–1834). The grid is still visible in satellite imagery.
Common Mistakes
Confusing 'township' (the survey unit = 36 mi²) with 'township' as a political subdivision, which can vary in size.
Educational Tips
A township = 6 mi × 6 mi = 36 sections. Each section = 1 mi² = 640 acres. It's a nested grid system.