Convert Square Mile (US Survey) (mi² (US)) to Square Pole (pole²) instantly.
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 Pole (pole²)
A square pole is yet another equivalent to the square rod and square perch. The triple terminology reflects different regional dialects and occupational vocabularies within the British Isles. The persistence of three names for the same unit illustrates the decentralized nature of early measurement standards, where local custom often outweighed national regulation. Although modern metrication has replaced these units, they remain historically important when examining rural land divisions and genealogical land records.