Convert Square Chains to Square Rods
Convert Square Chains (ch²) to Square Rods (sq rd) instantly and accurately.
Conversion Formula
sq rd = ch² × 16
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 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.
Quick Reference Table
| Square Chains (ch²) | Square Rods (sq rd) |
|---|---|
| 1 ch² | 16 sq rd |
| 2 ch² | 32 sq rd |
| 5 ch² | 80 sq rd |
| 10 ch² | 160 sq rd |
| 25 ch² | 400 sq rd |
| 50 ch² | 800 sq rd |
| 100 ch² | 1600 sq rd |