Online Tools and Calculators > Math > Arc Length Calculator

Arc Length Calculator

If you need calculate the area of a sector, please use our Area of A Sector Calculator

Angle in degrees: degrees

About Arc Length Calculator

The Arc Length Calculator is used to help you find the length of a sector of a circle.


The following is the calculation formula for the arc length of a sector:

arc length of a sector Formula

A = arc length 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.

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