Convert circular mil to square micrometer [µm^2] Online | Free area Converter

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.

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

  
  
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  Area = (diameter in mils)² circular mils.

  
  
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  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 Micrometer [µm²]

A square micrometer (µm²) is a unit of area equal to a square with sides 1 micrometer long (1 µm = 0.000001 meters). It is used to measure microscopic areas, such as cells or microchips.

1 µm² = 0.000000000001 m² (1 × 10⁻¹² m²).