Circle sector calculator, formulas, practical use.

Circle sector calculations

The circle sector calculator is designed for calculations radius and diameter of a circle sector, circumference and area of a circle sector and angle and arc length of a circle sector. For successful calculation, you need to know and enter into the calculator radius or diameter and at least one of the other valuesThen press send or enter to run calculations.

Circle sector parameters sketch:

circle sector calculator

Circle sector calculator form:


Unit system:
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  •          °

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Circle sector calculator variables and constants explanation:

r – radius
d – diameter
C – circumference
A – area
LA – arc length
π– 3,1415926535
β– sector angle
– unspecified values
specified values
calculated values

The formula for circle arc length calculation:

arc angle radius diameter

The formula for circle sector area calculation:

The formula for circle sector circumference calculation:

The formula for circle sector angle calculation:

Circle sector calculator use:

Calculations of circle sector are used for:

  • umbrella ribs
  • pizza slices
  • school calculations of a circle sector