Arc Length Calculator

Enter a circle radius and central angle in degrees to calculate arc length.

Radius

Central angle (degrees)

——

—Arc length

—Sector area

—Sector perimeter

How to use this Arc Length Calculator

Calculate circular arc length from radius and central angle. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.