Convert PPT to PPTX Online
Binary format is larger, less secure (OLE macro risks), and cannot be read by modern web-based editors like Google Slides without conversion. Converting to PPTX gives you a key advantage: industry standard for business presentations with smartart, animations, video embedding, and real-time co-authoring. PPTX is best for creating rich business presentations with animations, transitions, speaker notes, and embedded multimedia.
Why Convert PPT to PPTX?
Binary format is larger, less secure (OLE macro risks), and cannot be read by modern web-based editors like Google Slides without conversion — converting to PPTX overcomes this by providing industry standard for business presentations with smartart, animations, video embedding, and real-time co-authoring
PPTX is the right choice when you need to: building quarterly business reviews and investor pitch decks
Gain broader compatibility — PPTX works with Microsoft PowerPoint, Google Slides, LibreOffice Impress, Apple Keynote (import), WPS Presentation
Your PPT files were created for converting old training decks to modern pptx for editing and updating, but now you need a format suited to different workflows
PPT vs PPTX — Format Comparison
Microsoft PowerPoint Binary Presentation (.ppt)
Microsoft PowerPoint Open XML Presentation (.pptx)
How to Convert PPT to PPTX
Upload your PPT file
Drag your .ppt file onto the upload area or click to browse. We accept PPT files up to 200 MB.
Choose PPTX as output format
Select .pptx (Microsoft PowerPoint Open XML Presentation) from the format list. Configure any format-specific settings to match your requirements.
Convert and download
Click Convert and wait for processing. Your PPTX file will be ready to download in seconds. The result is optimized for creating rich business presentations with animations, transitions, speaker notes, and embedded multimedia.
Frequently Asked Questions
Is the PPT to PPTX conversion lossless?
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When both formats support lossless data, the conversion preserves all content. Slides with themes, animations, transitions, speaker notes, multimedia embedding, and master layouts.
How large will my PPTX file be compared to the original PPT?
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PPT files are typically 500 KB – 100 MB, while PPTX files are typically 1 MB – 200 MB. The actual size depends on content complexity and any quality settings you choose.
What software can open the converted PPTX file?
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PPTX is compatible with: Microsoft PowerPoint, Google Slides, LibreOffice Impress, Apple Keynote (import), WPS Presentation.
What is the maximum file size I can convert?
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PureConverter accepts PPT files up to 200 MB. Your files are processed securely and deleted from our servers after conversion.
What's the difference between PPT and PPTX?
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PPT (Microsoft PowerPoint Binary Presentation) is best for opening legacy powerpoint presentations from the office 97-2003 era. PPTX (Microsoft PowerPoint Open XML Presentation) is best for creating rich business presentations with animations, transitions, speaker notes, and embedded multimedia. Key tradeoff: PPT's advantage is backward compatibility with every version of powerpoint ever released, including office 97, while PPTX's advantage is industry standard for business presentations with smartart, animations, video embedding, and real-time co-authoring.
Pro Tips for PPT to PPTX Conversion
Review the output PPTX file to ensure all formatting and content transferred correctly from your PPT source
Keep a backup of your original PPT file — while our conversion is reliable, having the source is always recommended
PPTX works especially well for: designing conference talks with embedded video and interactive elements
Did you know? Like DOCX and XLSX, a PPTX file is a ZIP archive — each slide is a separate XML file inside, and you can extract and modify individual slides with a text editor.
Ready to Convert?
Upload your PPT file above and get your PPTX in seconds. Free, fast, and secure.