Convert circular inch to are [a] Online | Free area Converter

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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.


Are [a]


An are (a) is a unit of area equal to 100 square meters (m²). It is commonly used in land measurement, especially in some European countries.

1 are = 100 m² = 0.01 hectares.

Ares are useful for measuring small plots of land or gardens.




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