Acre (US Survey) to Township Converter
Unit Converter
Instant · Precise · Universal
23 units available
6 categories total
How to Convert Acre (US Survey) to Township
To convert US survey acres to m²: multiply by 4,046.873. To international acres: multiply by ~1.000004.
1 US survey acre ≈ 4,046.873 m². Differs from international acre (4,046.856 m²) by about 0.016 m².
For example, 1 Acre (US Survey) (ac (US)) = 0.00004340295139 Township (township).
Acre (US Survey) to Township — Common Values
| Acre (US Survey) (ac (US)) | Township (township) |
|---|---|
| 0.1 | 0.000004340295139 |
| 0.5 | 0.00002170147569 |
| 1 | 0.00004340295139 |
| 2 | 0.00008680590278 |
| 5 | 0.0002170147569 |
| 10 | 0.0004340295139 |
| 25 | 0.001085073785 |
| 50 | 0.002170147569 |
| 100 | 0.004340295139 |
| 500 | 0.02170147569 |
| 1000 | 0.04340295139 |
About Acre (US Survey) (ac (US))
Definition
The US survey acre is a historical unit of area based on the US survey foot, equal to approximately 4,046.873 m².
Mathematical Relationship
1 US survey acre ≈ 4,046.873 m². Differs from international acre (4,046.856 m²) by about 0.016 m².
Conversion Formula
To convert US survey acres to m²: multiply by 4,046.873. To international acres: multiply by ~1.000004.
Practical Applications
Historical US land surveys, old property deeds, and State Plane Coordinate System calculations.
Interesting Facts
The difference between US survey and international acre is about 0.016 m² — roughly the area of a sheet of paper. Over large areas, it adds up.
Common Mistakes
Using US survey acre in new calculations — it's been deprecated since 2023. Use the international acre instead.
Educational Tips
As of 2023, the US survey foot and acre are retired. All US measurements now use the international definitions.
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.