Circle / Arc / Chord

Circle / Arc / Chord Solver

Shop Geometry

Enter any two independent known values. The calculator solves the remaining circle-segment geometry. Radius and diameter count as the same underlying dimension.

Calculation Rules

The solver treats the geometry as the minor circular segment with included angle greater than 0° and no more than 180°. Chord, sagitta, arc length and included angle all refer to that same segment.

Supported input pairs include radius/diameter plus another segment value, chord + sagitta, chord + angle, sagitta + angle, and arc length + angle.

Engineering reference only. Verify critical dimensions, parameters, machine/tool limits and governing specifications before use. Terms & Disclaimer