Circle Sector Area Calculator
Enter the circle's radius and central angle in degrees to find the area covered by that sector.
CalcSimpler Examples
- r = 5, angle = 90° ⇒ 19.63
- r = 3, angle = 45° ⇒ 3.53
- r = 10, angle = 30° ⇒ 26.18
FAQ
What angle unit is used?
Degrees. Convert from radians if needed.
What if the angle is 360°?
The area equals that of the full circle.
Can the angle be more than 360°?
Yes, but it represents multiple rotations, giving areas beyond one circle.
Additional Information
- Formula: A = πr² × (θ ÷ 360).
- The result uses the same unit squared as the radius input.
- Widely used in geometry, engineering, and design for partial circle areas.
CalcSimpler