The Circle Segment Calculator instantly calculates: Circle segment area, radius, central angle, chord length, arc length, height. If you are interested in formulas, scroll down to find the basic formulas for calculating: area, perimeter, height, length, center angle, and abscissa of the center of gravity of a circle segment. The result has the same Unit of Measure for all unknowns, such as meters for chord, height, length, and meters square for area.