Convert Square Rods to Square Chains
Convert Square Rods (sq rd) to Square Chains (ch²) instantly and accurately.
Conversion Formula
ch² = sq rd × 0.0625
About Square Rods
A square rod (sq rd), also called a perch or square pole, equals the area of a square with sides of one rod (5.0292 m or 16.5 ft), giving approximately 25.29 m². This traditional unit was central to land surveying before the adoption of the metric system and remains embedded in legal property descriptions in the United States. There are exactly 160 square rods in one acre, and 40 square rods in one rood. Old farmland deeds and archaic land records in the UK and US frequently reference perches and square rods.
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 Rods (sq rd) | Square Chains (ch²) |
|---|---|
| 1 sq rd | 0.0625 ch² |
| 2 sq rd | 0.125 ch² |
| 5 sq rd | 0.3125 ch² |
| 10 sq rd | 0.625 ch² |
| 25 sq rd | 1.5625 ch² |
| 50 sq rd | 3.125 ch² |
| 100 sq rd | 6.25 ch² |