Circle Arc and Sector Calculator
Calculate arc length, sector area, and segment properties of circles
About this calculator
The Circle Arc and Sector Calculator is an essential tool for computing arc length, sector area, and segment properties of circles. Whether you're working on geometry homework, architectural designs, or engineering projects, this calculator helps you quickly determine measurements for circular segments. It's particularly useful for students, engineers, architects, and anyone working with circular geometries who needs precise calculations for arcs and sectors.
How to use
Enter your circle's radius and either the central angle (in degrees or radians) or arc length. The calculator will automatically compute all related properties including arc length, sector area, chord length, and segment area. Choose your preferred units and angle measurement system for accurate results.
Frequently asked questions
What's the difference between arc length and chord length?
Arc length is the curved distance along the circle's edge, while chord length is the straight-line distance between the arc's endpoints.
Can I use degrees instead of radians?
Yes, this calculator accepts both degrees and radians. Simply select your preferred angle unit from the dropdown menu.
What is a circle segment versus a sector?
A sector includes the area between two radii and the arc, while a segment is the area between the chord and the arc only.