📐 Central Angle Calculator
Calculate the angle from Arc Length and Radius.
Distance from the center to the edge.
Length of the curve along the circle’s edge.
Angle in Degrees
—
°
Angle in Radians
—
rad
Visual Representation
Center
Radius
Arc Length
Formula Used
θ (radians) = s / r
To get degrees: (s / r) × (180 / π)
**Note:** This calculator assumes a standard 2D circle geometry. If the arc length is larger than the circumference (2πr), the angle will exceed 360°, representing multiple turns around the circle.