We have found 2 software records in our database eligible for .ppt to .keynote file format conversion.
Apple Keynote supports PowerPoint (.ppt) presentations just fine, which means ppt to keynote conversion or other similar types of powerpoint to keynote conversion are certainly possible.
However the latest versions of the app use .key files instead .keynote, which is a different file format. If you need the program to save your presentations in the previously used format, you have to change that in preferences settings.
PPT
A ppt file extension is traditionally used for Microsoft PowerPoint presentations. PowerPoint presentation can contain text, pictures, audio or video data. Sometimes also called slide shows.
KEYNOTE
A keynote file extension is used for presentations saved in Apple iWork Keynote '06, or in its previous versions. Keynote is a professional presentation tool for Mac OS X, macOS and iOS.