Geometrie

Sector Area Calculator | Calculate Area of a Sector

Easily calculate the area of a sector of a circle using our online calculator. Input radius and angle in degrees or radians for instant results. Perfect for geometry calculations.

Radius (r)SectorCenter

Sector Area:

Result will appear here...

Understanding Sector Area

A sector of a circle is a pie-shaped portion enclosed by two radii and an arc. The area of a sector is a fraction of the total area of the circle, determined by the central angle.

The formula to calculate the area of a sector when the central angle (θ) is in degrees and the radius is r is:

If the central angle is given in radians (θ), the formula becomes:

This calculator simplifies the process of finding the sector area, whether you are working on geometry problems, architectural designs, or any application requiring circle sector calculations.