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

Circular Inch


A circular inch is a unit of area used primarily in engineering and wire gauge measurements. It represents the area of a circle with a diameter of one inch.



  • Formula: Area = π × (radius)²



  • Since the radius is half an inch,

    Area = π × (0.5 in)² = π × 0.25 in² ≈ 0.7854 square inches (in²).



Circular inches are often used to specify cross-sectional areas of wires or pipes.


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).




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