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23 units available
6 categories total
To convert townships to sections: multiply by 36. To acres: multiply by 23,040. To km²: multiply by 93.24.
1 township = 36 sections = 36 mi² = 23,040 acres ≈ 93.24 km².
For example, 1 Township (township) = 184010648800 Circular Inch (circ in).
| Township (township) | Circular Inch (circ in) |
|---|---|
| 0.1 | 18401064880 |
| 0.5 | 92005324410 |
| 1 | 184010648800 |
| 2 | 368021297600 |
| 5 | 920053244100 |
| 10 | 1.840106e+12 |
| 25 | 4.600266e+12 |
| 50 | 9.200532e+12 |
| 100 | 1.840106e+13 |
| 500 | 9.200532e+13 |
| 1000 | 1.840106e+14 |
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.
The circular inch is the area of a circle one inch in diameter, equal to π/4 square inches (approximately 0.0005067 m²).
1 circular inch = π/4 in² ≈ 0.7854 in² ≈ 5.067 cm². Equals 1,000,000 circular mils.
To convert circular inches to in²: multiply by 0.7854. To cm²: multiply by 5.067.
Wire and cable cross-section calculations, especially for large conductors in power distribution.
The circular mil and circular inch exist solely to avoid π in cross-section math. Diameter² (in circular units) directly gives the area.
Confusing circular inch with square inch — a circular inch is about 78.5% of a square inch.
For a circle: area in circular inches = diameter². Area in square inches = diameter² × π/4. The circular unit absorbs the π/4 factor.



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