XLSX vs PPTX
How do XLSX and PPTXcompare? Here's everything you need to know to choose the right format — and how to convert between them.
.xlsx
Full guide →Office Open XML Spreadsheet
XLSX is the default format for Microsoft Excel spreadsheets. It supports complex formulas, charts, pivot tables, and large datasets. It's the industry standard for data analysis and financial modeling.
.pptx
Full guide →Office Open XML Presentation
PPTX is the default format for Microsoft PowerPoint presentations. It supports slides, animations, transitions, speaker notes, and multimedia content for creating professional presentations.
| Specification | XLSX | PPTX |
|---|---|---|
| Full name | Office Open XML Spreadsheet | Office Open XML Presentation |
| Extension | .xlsx | .pptx |
| MIME type | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| Category | Document | Document |
| Developer | Microsoft | Microsoft |
| Year introduced | 2007 | 2007 |
XLSX advantages
- Powerful formula and calculation engine
- Supports charts, pivot tables, and macros
- Industry standard for business data
- Compatible with Google Sheets and LibreOffice
XLSX limitations
- Complex format for simple data
- Can be slow with very large datasets
- Formatting issues between applications
- Requires office software for full features
PPTX advantages
- Rich multimedia and animation support
- Industry standard for presentations
- Compatible with Google Slides and Keynote
- Supports templates and themes
PPTX limitations
- Large file sizes with embedded media
- Formatting varies between platforms
- Complex format for simple slideshows
- Animation support inconsistent outside PowerPoint
Which should you use?
XLSX and PPTX serve different purposes. XLSX is ideal for financial reports and budgets, while PPTX excels at business presentations.
Best uses for XLSX
Best uses for PPTX
Convert between XLSX and PPTX
Need to switch formats? Convert for free with SquishConvert.