Circle Sector Calculator
Find the area and arc length of a circle sector.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
This calculator finds the area and arc length of a circular sector — the pie-slice-shaped region bounded by two radii and the arc between them — from the circle's radius and the sector's central angle, scaling the full circle's area and circumference by what fraction of 360° the angle represents.
It is used by students solving circle-geometry problems, and in practical contexts like designing a pie chart segment, calculating material for a fan-shaped or wedge-cut piece in construction or fabrication, or figuring out the coverage area of a rotating sprinkler that only sweeps part of a full circle.
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