It is important to note that changes made to the exported presentation will not affect the original version. To convert a Keynote presentation into another format you can use the same Apple Keynote application which was used to create the presentation. Besides PowerPoint format KEY files can also be converted into other formats such as HTML, Tif, Png, PDF, Mov, etc. PowerPoint cannot open Keynote on its own, but there are other online tools that will allow you to turn Keynote into a PowerPoint presentation.
However, some Keynote features will not be 100% exported, such as transitions and animations, so it is recommended that this procedure be done only for simple presentations. However, there is the possibility to export important Keynote files for Microsoft PowerPoint compatible presentations. Keynote is only available on OS X, and there is no active version of Keynote for Windows.
PowerPoint is available on both Windows and Mac with PowerPoint 2011 for Mac. Apple Keynote KEY files are the most common presentation format among Apple Mac users, however, sometimes it is necessary to open Keynote in Microsoft PowerPoint, either in Windows, or in the Apple OS itself.
