Convert PPT to PPTX

Convert a PPT presentation to PPTX while keeping its formatting. The conversion runs with LibreOffice on our server and your file is deleted automatically afterwards.

Your file is deleted automatically after conversion.

How to convert PPT to PPTX

PPTX is the modern Office Open XML format: smaller files, better recovery from damage and full support in Microsoft Office, Google Workspace and Apple iWork. This converter opens the PPT with LibreOffice and saves it as PPTX, preserving text, styles, tables and images as faithfully as possible. It is the quickest way to open an incompatible file or to meet a format requirement without installing an office suite.

Step 1: Choose your PPT file
Drag and drop a .ppt, .pps, .pot file onto the converter or click to browse. It works on desktop, tablet and phone.
Step 2: Convert to PPTX
The file is uploaded securely and saved as PPTX by LibreOffice in a temporary, isolated folder.
Step 3: Download the PPTX
Save the PPTX file to your device. You can start again with another file right away.

Good to know

Styles, tables, lists, images, headers and footers are converted; macros are never executed and are not carried over.

Why use this PPT to PPTX converter?

PPTX is the modern Office Open XML format: smaller files, better recovery from damage and full support in Microsoft Office, Google Workspace and Apple iWork.
No Office or LibreOffice installation required.
Formatting, tables and images are kept.
Uploaded files are deleted automatically after conversion.

Is it free?

Yes. Converting PPT to PPTX is free, with no watermark, signup or email required. Local conversions have no artificial file-size or daily cap; the practical limit is your device. This server-based conversion accepts files up to 25 MB.

Is my file uploaded?

This conversion needs a server engine, so the file is uploaded over an encrypted HTTPS connection, converted in an isolated temporary folder and deleted automatically as soon as the result is sent back. Nothing is kept, logged or shared.

About the formats

What is PPT?

PPT is the binary presentation format used by Microsoft PowerPoint up to version 2003. A single file holds slides, text, images, charts, speaker notes and transitions. Related extensions are .pps, which opens directly as a slideshow, and .pot, used for templates. Since PowerPoint 2007 the default is the XML-based PPTX.

Use PPT only for compatibility with very old versions of PowerPoint or with legacy systems that require it. For new presentations, PPTX is lighter and more reliable, and PDF is the safest way to share slides that nobody needs to edit.

PPT (PowerPoint 97-2003 presentation)

What is PPTX?

PPTX (PowerPoint Open XML) is the standard format for slide-based presentations, created and edited in Microsoft PowerPoint, Google Slides and LibreOffice Impress. A presentation is made up of slides that can hold text, images, charts, videos and speaker notes. Like other modern Office formats, PPTX files are ZIP containers storing XML.

Use PPTX whenever you build a slide deck to present, pitches, lessons, webinars and team updates. It keeps the structure of slides and notes intact, so you can also convert it to PDF to share a fixed version.

PowerPoint Presentation (PPTX)

Frequently Asked Questions

Is PPT to PPTX conversion free?

Yes. It is free, with no watermark, signup or email required. Local conversions have no artificial file-size or daily cap; the practical limit is your device. This server-based conversion accepts files up to 25 MB.

Will my PPT formatting survive the conversion?

Text, styles, tables, images and page setup are converted. Very specific features that PPTX does not support are simplified, so it is worth a quick look at the result.

Is it safe to convert ppt to pptx here?

Yes. The upload is encrypted, the file lives only in a temporary folder during conversion and it is deleted automatically afterwards. We do not read, keep or share your files.

Do I need to install anything?

No. Everything runs in a modern browser (Chrome, Edge, Firefox or Safari) on Windows, macOS, Linux, Android and iOS. There is no app, plugin or account.

Can I convert PPTX back to PPT?

Yes, there is a dedicated PPTX to PPT converter linked in the related tools below. Keep in mind that information dropped in one direction cannot always be restored in the other.

Need the opposite? Convert PPTX to PPT

PowerPoint