Circular Inch to Township Converter
Unit Converter
Instant · Precise · Universal
23 units available
6 categories total
How to Convert Circular Inch to Township
To convert circular inches to in²: multiply by 0.7854. To cm²: multiply by 5.067.
1 circular inch = π/4 in² ≈ 0.7854 in² ≈ 5.067 cm². Equals 1,000,000 circular mils.
For example, 1 Circular Inch (circ in) = 5.434468e-12 Township (township).
Circular Inch to Township — Common Values
| Circular Inch (circ in) | Township (township) |
|---|---|
| 0.1 | 5.434468e-13 |
| 0.5 | 2.717234e-12 |
| 1 | 5.434468e-12 |
| 2 | 1.086894e-11 |
| 5 | 2.717234e-11 |
| 10 | 5.434468e-11 |
| 25 | 1.358617e-10 |
| 50 | 2.717234e-10 |
| 100 | 5.434468e-10 |
| 500 | 2.717234e-9 |
| 1000 | 5.434468e-9 |
About Circular Inch (circ in)
Definition
The circular inch is the area of a circle one inch in diameter, equal to π/4 square inches (approximately 0.0005067 m²).
Mathematical Relationship
1 circular inch = π/4 in² ≈ 0.7854 in² ≈ 5.067 cm². Equals 1,000,000 circular mils.
Conversion Formula
To convert circular inches to in²: multiply by 0.7854. To cm²: multiply by 5.067.
Practical Applications
Wire and cable cross-section calculations, especially for large conductors in power distribution.
Interesting Facts
The circular mil and circular inch exist solely to avoid π in cross-section math. Diameter² (in circular units) directly gives the area.
Common Mistakes
Confusing circular inch with square inch — a circular inch is about 78.5% of a square inch.
Educational Tips
For a circle: area in circular inches = diameter². Area in square inches = diameter² × π/4. The circular unit absorbs the π/4 factor.
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.