the calculation is developed for geometrical designs of belt and chain transmissions with more sprocket wheels (max. 15). application is developed in ms excel, is multi-language, supports imperial and metric units and solves the following main tasks: - calculation of the necessary length of the belt (chain) using known positions and diameters of sprocket wheels - achieving the desired (table) length of the belt / chain using a change in the position of the selected sprocket wheel. - calculation of geometry (angles of wrapping, numbers of teeth in engagement, axis distances, etc.) - calculation of the radial force acting on the sprocket wheel axis. - support of 2d cad systems (autocad, autocad lt, intellicad, turbocad…)this module is a part of mitcalc - mechanical and technical calculation package for gear, belt and chain drives, springs, beam, shaft, bolt connection, shaft connection, tolerances and many others