ArcCalc

ArcCalc is a Chrome extension that lets you compute every part of a circular arc or segment from two inputs. It covers radius, length, width (chord), height, apothem, angle, and area with 21 possible solution cases.

Choose units (feet, inches, meters, centimeters, millimeters) and angle measures (degrees or radians); view all results instantly, with automatic saving by date, error checks, and email sharing. Ideal for carpenters, engineers, designers, and DIY enthusiasts.