Upgrading PPT to PPTX moves a PowerPoint 97-2003 deck into the current XML-based format that every modern presentation tool expects. Slides, notes, and standard animations carry straight over; the payoff is smaller files, better media handling, and full support in PowerPoint for the web, Google Slides, and Keynote.
Convert PPT to PPTX – Free Online PPT to PPTX Converter
Why convert PPT to PPTX?
- Open ancient conference and training decks in web-based tools, which handle PPTX far better than binary PPT.
- Shrink archives - the zipped XML format typically stores the same deck in noticeably less space.
- Escape compatibility mode: modern PowerPoint restricts features on PPT files until they are upgraded.
Tip: Fonts are the usual snag with decks this old: if the original machine used typefaces you no longer have, text reflows regardless of format. Check line breaks on text-heavy slides after upgrading.
How to convert PPT to PPTX
- Upload your PPT file using the area above.
- PPTX is preselected as the target format.
- Click Start and wait for the conversion to finish.
- Download your converted PPTX file.

