Convert acre (US survey) to square kilometer
Please provide values below to convert acre (US survey) [ac (US)] to square kilometer [km^2], or Convert square kilometer to acre (US survey).
How to Convert Acre (Us Survey) to Square Kilometer
1 ac (US) = 0.00404687260987 km^2
Example: convert 15 ac (US) to km^2:
15 ac (US) = 15 × 0.00404687260987 km^2 = 0.06070308914805 km^2
Acre (Us Survey) to Square Kilometer Conversion Table
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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.
Square Kilometer
A square kilometer is a unit of area equal to the area of a square with sides measuring one kilometer each.
History/Origin
The square kilometer has been used as a standard unit of area measurement in the metric system since its adoption, primarily for measuring large land areas such as countries and regions.
Current Use
It is commonly used in geography, urban planning, and environmental studies to quantify land and area sizes, especially in contexts requiring large-scale measurements.