How to translate a PowerPoint presentation using Google translate
Google Translate allows you to translate documents and virtually you can translate any document supported in Google Docs, so .ppt files are also supported. That means that you can translate PowerPoint presentations using Google Translate.
This let you translate presentations easily, just need to upload the PowerPoint .PPT file in the following way:
Open translate.google.com in your browser.
Then you need to upload the document by choosing a .ppt file in your computer.
Remember to choose the source and target language and then click the blue Translate button.