Convert circular mil to square foot [ft^2] Online | Free area Converter

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Circular Mil


A circular mil is a unit of area used mainly to measure the cross-sectional area of round wires and cables in electrical engineering.



  • Defined as the area of a circle with a diameter of 1 mil (1 mil = 0.001 inch).



  • Area = (diameter in mils)² circular mils.



  • 1 circular mil ≈ 7.854 × 10⁻¹⁰ square meters or 0.7854 square mils.



Circular mils simplify calculations for round wires since area scales with the square of the diameter.



Square Foot [ft²]


A square foot (ft²) is a unit of area commonly used in the United States and other countries. It represents a square with sides 1 foot (12 inches) long.

1 square foot = 144 square inches = 0.0929 square meters.

Square feet are widely used to measure the area of rooms, houses, and small plots of land.



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