By default, all software supports multiple file extensions. ERwin supports at least 1 different file extensions. The basic files that ERwin supports are .ERX. However, not all of the extensions listed on the list are always used to save the effects of work in ERwin. Very often, files with such extensions are used as source data files used by ERwin.
ERwin can be used to convert file formats between the file extensions listed below. You can open a file with one of the file extensions below via ERwin and try to save it in another file format, also supported by ERwin.