Convert square foot (US survey) to circular inch Online | Free area Converter

Square Foot (US Survey)

The square foot (US survey) is a unit of area based on the US survey foot, which is slightly longer than the international foot. It is mainly used in land surveying and mapping in the United States.

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  1 US survey foot = 1200⁄3937 meters (approximately 0.3048006096 m)

  
  
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  1 square foot (US survey) ≈ 0.0929034116 m²

  
  

This unit helps maintain consistency in US land measurements, especially in legal and cadastral contexts.

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.

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  Formula: Area = π × (radius)²

  
  
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  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.