This cable bundle diameter calculator was developed to help engineers, designers, and installers quickly determine the approximate outside diameter of cable bundles for routing and protection applications. By entering the quantity and diameter of each cable, users can instantly calculate an estimated bundle diameter and view a graphical representation of the bundle configuration. Whether sizing expandable sleeving, conduit, shielding, or other cable management solutions, the calculator provides a fast and convenient way to evaluate bundle dimensions and support design decisions.