Convert square millimeter to acre
Please provide values below to convert square millimeter [mm^2] to acre [ac], or Convert acre to square millimeter.
How to Convert Square Millimeter to Acre
1 mm^2 = 2.47105381467165e-10 ac
Example: convert 15 mm^2 to ac:
15 mm^2 = 15 × 2.47105381467165e-10 ac = 3.70658072200748e-09 ac
Square Millimeter to Acre 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
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.