Convert Square Chains to Townships
Convert Square Chains (ch²) to Townships (twp) instantly and accurately.
Conversion Formula
twp = ch² × 4.340277778e-6
About Square Chains
A square chain (ch²) is a surveying unit equal to the area of a square with sides of one Gunter's chain (66 feet or ~20.12 m), approximately 404.69 m². Ten square chains equal exactly one acre, making it the natural subdivision unit in traditional land surveying. The US Public Land Survey System used chains to lay out townships and sections, and square chains appear throughout old legal property descriptions and government land grants across North America. One square chain equals exactly 16 square rods.
About Townships
A township (twp) is a large survey unit used in the US Public Land Survey System, defined as a square with sides of 6 statute miles, giving exactly 36 square miles or approximately 93,240,000 m². Each township is subdivided into 36 one-square-mile sections of 640 acres each. The Township and Range system is how most US land west of Ohio was divided and sold; township numbers and names still appear in legal land descriptions, county records, and geographic placenames across the American Midwest and West.
Quick Reference Table
| Square Chains (ch²) | Townships (twp) |
|---|---|
| 1 ch² | 4.34 × 10-6 twp |
| 2 ch² | 8.681 × 10-6 twp |
| 5 ch² | 2.17 × 10-5 twp |
| 10 ch² | 4.34 × 10-5 twp |
| 25 ch² | 0.000108507 twp |
| 50 ch² | 0.000217014 twp |
| 100 ch² | 0.000434028 twp |