Convert circular inch to square inch [in^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 Inch [in²]
A square inch (in²) is a unit of area representing a square with sides 1 inch long. It is commonly used in the United States for measuring small surfaces, such as paper sizes or screen dimensions.
1 square inch = 6.4516 square centimeters = 0.00064516 square meters.