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

It is easy to use. Just input radius of the circle and the central angle in degrees, then click Calculate Arc Length 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.

No. This tool does not have app in Google Play or Apple store. However, it is designed 100% mobile friendly.

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