Convert acre to square mile (US survey)
Please provide values below to convert acre [ac] to square mile (US survey) [mi^2 (US)], or Convert square mile (US survey) to acre.
How to Convert Acre to Square Mile (Us Survey)
1 ac = 0.00156249375001803 mi^2 (US)
Example: convert 15 ac to mi^2 (US):
15 ac = 15 × 0.00156249375001803 mi^2 (US) = 0.0234374062502704 mi^2 (US)
Acre to Square Mile (Us Survey) Conversion Table
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Acre
An acre is a unit of area commonly used in the United States and the UK, equal to 43,560 square feet or approximately 4,047 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 19th century and has since been used primarily for measuring land, especially in agriculture.
Current Use
Today, the acre is primarily used in real estate, agriculture, and land planning in the United States, the UK, and other countries that use imperial or customary units.
Square Mile (Us Survey)
A square mile (US survey) is a unit of area equal to the area of a square with sides of one mile, specifically used in the United States survey system.
History/Origin
The square mile has been used historically in land measurement and mapping in the United States, originating from the British imperial system. It is commonly employed in surveying and land division, especially in rural and agricultural contexts.
Current Use
Today, the square mile (US survey) is primarily used in land surveying, real estate, and geographic data within the United States, particularly for measuring large land areas such as counties, states, and national parks.