Convert square mile to acre (US survey)
Please provide values below to convert square mile [mi^2] to acre (US survey) [ac (US)], or Convert acre (US survey) to square mile.
How to Convert Square Mile to Acre (Us Survey)
1 mi^2 = 639.997440003232 ac (US)
Example: convert 15 mi^2 to ac (US):
15 mi^2 = 15 × 639.997440003232 ac (US) = 9599.96160004849 ac (US)
Square Mile to Acre (Us Survey) Conversion Table
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Square Mile
A square mile is a unit of area measurement equal to the area of a square with sides of one mile each.
History/Origin
The square mile has been used historically in the United States and the United Kingdom for land measurement, especially in surveying and real estate, originating from the imperial system of units.
Current Use
Today, the square mile is primarily used in the United States and the UK for measuring land areas, such as in real estate, geography, and environmental studies, within the context of the 'Area' converter in 'Common Converters'.
Acre (Us Survey)
An acre (US survey) is a unit of area used primarily in land measurement, equal to 43,560 square feet or approximately 4,046.86 square meters.
History/Origin
The acre originated in medieval England as a measure of land area that could be plowed in one day with a yoke of oxen. It was standardized in the United States based on the survey system, maintaining its traditional size for land measurement purposes.
Current Use
The acre (US survey) is still used in the United States for real estate, agriculture, and land planning, especially in rural and agricultural contexts, although the metric system is increasingly adopted globally.