Convert square millimeter to acre (US survey)
Please provide values below to convert square millimeter [mm^2] to acre (US survey) [ac (US)], or Convert acre (US survey) to square millimeter.
How to Convert Square Millimeter to Acre (Us Survey)
1 mm^2 = 2.47104393046888e-10 ac (US)
Example: convert 15 mm^2 to ac (US):
15 mm^2 = 15 × 2.47104393046888e-10 ac (US) = 3.70656589570331e-09 ac (US)
Square Millimeter to Acre (Us Survey) Conversion Table
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Square Millimeter
A square millimeter (mm²) is a unit of area equal to the area of a square with sides measuring one millimeter.
History/Origin
The square millimeter has been used in scientific and engineering contexts for precise measurement of small areas, especially in fields like electronics and material science, as a subdivision of the metric system established in the 19th century.
Current Use
It is commonly used today in fields such as electronics, manufacturing, and scientific research to measure small surface areas, including the cross-sectional areas of wires and components.
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.