Calculate the area of a circular sector given the radius and central angle in degrees or radians.

Area: 13.09 sq units
Arc Length: 5.24 units
Sector Perimeter: 15.24 units
Full circle: 78.54 sq units (16.7% of circle)

Formula: Area = (θ/360) × πr² (degrees) or Area = ½ × r² × θ (radians).

Circular Sector Area

The area of a circular sector is the region bounded by two radii and the arc between them. It is proportional to the central angle .

How to Use This Calculator

1. Enter radius: The radius of the circle.
2. Enter angle: The central angle of the sector.
3. Select unit: Degrees or radians.
4. Calculate: Click “Calculate” or press Enter.