Convert circular mil to square inch
Please provide values below to convert circular mil [circ mil] to square inch [in^2], or Convert square inch to circular mil.
How to Convert Circular Mil to Square Inch
1 circ mil = 7.85398163246327e-07 in^2
Example: convert 15 circ mil to in^2:
15 circ mil = 15 × 7.85398163246327e-07 in^2 = 1.17809724486949e-05 in^2
Circular Mil to Square Inch Conversion Table
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Circular Mil
A circular mil is a unit of area used to measure the cross-sectional size of wires, representing the area of a circle with a diameter of one mil (one thousandth of an inch).
History/Origin
The circular mil originated in the electrical industry to specify wire sizes before the adoption of metric units. It has been a standard measurement in North America for wire gauge sizes for many decades.
Current Use
Circular mils are still used today in the electrical industry to specify wire cross-sectional areas, especially in North America, although metric units are increasingly common.
Square Inch
A square inch is a unit of area measurement equal to the area of a square with sides of one inch.
History/Origin
The square inch has been used historically in the imperial and US customary systems for measuring small areas, especially in engineering, manufacturing, and real estate, dating back to the adoption of the inch as a standard unit of length.
Current Use
Today, the square inch is still used in various fields such as printing, screen sizes, and material measurements, although the square meter is more common internationally. It remains a standard unit within the 'Area' converter in measurement tools and applications.