Convert Square Mile (US Survey) (mi² (US)) to Square Chain (ch²) instantly.
Square Mile (US Survey) to Square Chain conversion
1 Square Mile (US Survey) (mi² (US)) = 6400.0256 Square Chain (ch²). To convert Square Mile (US Survey) to Square Chain, multiply the value by 6400.0256.
| Square Mile (US Survey) (mi² (US)) | Square Chain (ch²) |
|---|---|
| 1 | 6400.0256 |
| 2 | 12800.051 |
| 5 | 32000.128 |
| 10 | 64000.256 |
| 25 | 160000.64 |
| 50 | 320001.28 |
| 100 | 640002.56 |
| 1000 | 6400025.6 |
Frequently asked questions
How many Square Chain are in one Square Mile (US Survey)?
One Square Mile (US Survey) (mi² (US)) equals 6400.0256 Square Chain (ch²).
How do I convert Square Mile (US Survey) to Square Chain?
To convert Square Mile (US Survey) to Square Chain, multiply the value by 6400.0256.
What is 10 Square Mile (US Survey) in Square Chain?
10 Square Mile (US Survey) = 64000.256 Square Chain.
About these units
Square Mile (US Survey) (mi² (US))
The US survey square mile is extremely close to the international square mile but is defined using the US survey foot, a slightly different value than the international foot historically used in land surveying. This unit appears in American land deeds, cadastral maps, and federal land management documents. The Public Land Survey System (PLSS), which divided much of the western United States into townships and sections, relied heavily on survey-based square miles. Although the modern US has transitioned to the international foot (as of 2023), historical land descriptions remain legally tied to the survey-based definition, ensuring its continued relevance.
Square Chain (ch²)
A square chain equals the area of a square one chain (~66 feet) per side, resulting in 4,356 square feet, or exactly 1/10 of an acre. This unit is closely linked to the chain, a surveyor's unit standardized by Edmund Gunter in the 17th century. Because 10 square chains make an acre, survey calculations for early colonial and American lands were extremely efficient. Square chains allowed surveyors to map and divide land rapidly using ropes or metal chains, producing a legacy seen in long, straight property lines still visible today across rural landscapes.