Check out some options how Presentation pptx files might be converted to Excel xlsx format.
Home > Search converters: pptx to xlsx
Search for pptx to xlsx converter or software able to handle these file types.
It doesn't seem likely that a PowerPoint presentation (.pptx) can be converted to Excel spreadsheet (.xlsx) as these two document formats serve different purpose, which means direct pptx to xlsx conversion is unlikely.
You could of course copy the tables, text or images from a .pptx file to .xlsx when you open the presentation in PowerPoint and copy and paste what you need to to Excel, but that is not file conversion in proper sense.
Unfortunately, there is no detailed software record in the database that match this conversion.
Additional links: pptx file extension details, xlsx file extension details
PPTX
Files with pptx extension are presentations from modern version of PowerPoint from Microsoft Office / Office 365. PowerPoint slide shows are basically set of screens which can include text, graphic, sounds or videos used for various presentation purposes.
XLSX
Files with xlsx extension are s used by Microsoft Excel for its workbooks (spreadsheets) in Office Open XML format. XLSX is the latest spreadsheet format used by Excel with the adoption of XML formatting first used in Office 2007. While older xls files were in proprietary binary file format, xlsx spreadsheets use a somewhat altered XML scheme.
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