Convert Square Megameters to Square Chains
Convert Square Megameters (Mm²) to Square Chains (ch²) instantly and accurately.
Conversion Formula
ch² = Mm² × 2471053815
About Square Megameters
A square megameter (Mm²) equals the area of a square with sides of one million meters - 10¹² m², or one trillion square meters. At this scale we describe major geographic and planetary regions. The entire land surface of Earth is about 149 Mm², the Indian Ocean covers roughly 70 Mm², and the Sahara Desert spans approximately 9.2 Mm². Square megameters provide a convenient scale for comparing continent-sized areas without resorting to hundreds of millions of square kilometers.
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.
Quick Reference Table
| Square Megameters (Mm²) | Square Chains (ch²) |
|---|---|
| 1 Mm² | 2.471 × 109 ch² |
| 2 Mm² | 4.942 × 109 ch² |
| 5 Mm² | 1.236 × 1010 ch² |
| 10 Mm² | 2.471 × 1010 ch² |
| 25 Mm² | 6.178 × 1010 ch² |
| 50 Mm² | 1.236 × 1011 ch² |
| 100 Mm² | 2.471 × 1011 ch² |