The calculator above provides the geometry. DIN 5480 is famous for its complex tolerances (clearance, interference fits).

To make the calculator more user-friendly and efficient, the following new developments can be implemented:

Klaus, a drive train engineer in Munich, was tired of manually calculating root fillet diameters, form diameters, and space widths for involute splines (module-based, with references like N, NA, NB, etc.). He decided to build an Excel tool.