If you need calculate the arc length of a sector, please use our Arc Length Calculator
The Area of A Sector Calculator is used to help you find the area of a sector of a circle.
The following is the calculation formula for the area of a sector:
A = area of a sector
π = 3.141592654
r = radius of the circle
θ = central angle in degrees
Please input radius of the circle and the central angle in degrees, then click Calculate Area of Sector button. The calculator will show you the chart of the sector based on your input as well. You can also download the result in PDF filetype.