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Arc Length Calculator Symbolab Online

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Understanding the length of an arc can be essential in numerous scientific and mathematical contexts. But, calculating it manually can be tedious and time-consuming. This is where the arc length calculator comes in handy.


The arc length is the distance between two points along the edge of a circle. It’s measured in linear units like inches or centimeters. Symbolab, on the other hand, is a leading online education tool known for its cutting-edge calculators. Thus, an arc length calculator Symbolab is an advanced tool that quickly computes the length of an arc.

How the Calculator Works

Our arc length calculator is intuitive and easy to use. Simply enter the radius of the circle and the central angle in degrees. Click the “Calculate” button, and you’ll instantly get the arc length. If you wish to make a new calculation, hit the “Reset” button to clear the previous values.

The Formula Behind the Calculator

The calculator uses this formula: Arc Length = (θ/360) × 2πr, where θ is the central angle of the arc measured in degrees and r is the radius of the circle. This formula is derived from the basic principles of circle geometry and gives us the precise length of the arc.


For example, consider a circle with a radius of 5 units and a central angle of 90 degrees. Enter these values into the calculator, hit the ‘Calculate’ button, and you get an arc length of approximately 7.85 units.


  • Engineering: This tool is extensively used in various engineering fields like civil and mechanical for calculations involving circles and arcs.
  • Geometry: In geometry, the calculator aids in solving complex problems involving circles.

Most Common FAQs

Can I use the arc length calculator for large angles?

Yes, the calculator is designed to handle any angle from 0 to 360 degrees.

Is the calculator free to use?

Absolutely! The calculator is completely free to use.


The arc length calculator Symbolab is a potent tool for everyone dealing with circles in their studies or professions. By making calculations simple, it saves time and eliminates potential errors, making it an essential tool for your mathematical toolkit.

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