How do XLSX and EPUBcompare? Here's everything you need to know to choose the right format — and how to convert between them.
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.
Electronic Publication
EPUB is the open standard for digital books and publications. It supports reflowable content that adapts to any screen size, making it the preferred format for e-readers and reading apps.
| Specification | XLSX | EPUB |
|---|---|---|
| Full name | Office Open XML Spreadsheet | Electronic Publication |
| Extension | .xlsx | .epub |
| MIME type | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | application/epub+zip |
| Category | Document | Document |
| Developer | Microsoft | International Digital Publishing Forum (IDPF) |
| Year introduced | 2007 | 2007 |
XLSX and EPUB serve different purposes. XLSX is ideal for financial reports and budgets, while EPUB excels at e-books and digital publications.
Need to switch formats? Convert for free with SquishConvert.