Convert Square Chains to Square Kilometers
Convert Square Chains (ch²) to Square Kilometers (km²) instantly and accurately.
Conversion Formula
km² = ch² × 0.0004046856422
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 Square Kilometers
A square kilometer (km²) is a metric unit of area equal to a square with sides of one kilometer (1,000 m × 1,000 m). It is used for measuring large land areas such as cities, forests, lakes, and countries. Manhattan (New York) is about 59 km², and Monaco (the second smallest country) is just over 2 km². This unit is essential in geography, urban planning, forestry, and environmental impact studies.
Quick Reference Table
| Square Chains (ch²) | Square Kilometers (km²) |
|---|---|
| 1 ch² | 0.000404686 km² |
| 2 ch² | 0.000809371 km² |
| 5 ch² | 0.00202343 km² |
| 10 ch² | 0.00404686 km² |
| 25 ch² | 0.0101171 km² |
| 50 ch² | 0.0202343 km² |
| 100 ch² | 0.0404686 km² |