By default, all software supports multiple file extensions. Win64 supports at least 4 different file extensions. The basic files that Win64 supports are .D64. However, not all of the extensions listed on the list are always used to save the effects of work in Win64. Very often, files with such extensions are used as source data files used by Win64.
Win64 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 Win64 and try to save it in another file format, also supported by Win64.