XLSX to EPUB Converter

Turn XLSX data into EPUB eBooks — free online

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eBook Ready

Transform XLSX spreadsheet content into EPUB — the universal eBook standard supported by virtually every reading device and app.

Read Anywhere

EPUB reflows to fit any screen — from phones to tablets to dedicated e-readers. Your XLSX data becomes portable reading material.

Secure and Private

Uploaded XLSX files are deleted immediately. Generated EPUB files are purged within 24 hours — your data is never retained.

How to convert XLSX to EPUB

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose epub or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your epub file right afterwards

About formats

XLSX is the default spreadsheet format for Microsoft Excel since Office 2007, based on the Office Open XML (OOXML) standard published as ECMA-376 and adopted as ISO/IEC 29500. An XLSX file is a ZIP archive containing XML documents that describe workbook structure, sheet data, styles, shared strings, formulas, charts, pivot tables, and relationships between components. Each worksheet is stored as a separate XML part where cells are organized by row and column references with typed values and style indices. The XML foundation enables programmatic spreadsheet creation and manipulation using libraries like openpyxl (Python), Apache POI (Java), and ClosedXML (.NET) without requiring Excel. XLSX dramatically expanded capacity compared to XLS: over 1 million rows and 16,384 columns per sheet, enabling use cases previously impossible in the binary format. One advantage is openness and cross-platform support — the documented OOXML specification enables implementation by LibreOffice Calc, Google Sheets, Apple Numbers, and numerous specialized tools. Built-in ZIP compression is another practical strength: XLSX files are typically 50-75% smaller than equivalent XLS files, and the modular XML structure improves data recovery when files are partially corrupted. The format supports modern Excel features including structured tables, slicers, sparklines, Power Query connections, and real-time co-authoring. XLSX has become the standard format for spreadsheet data interchange across business, scientific, and government domains.
Developer: Microsoft
Initial release: January 30, 2007
EPUB (Electronic Publication) is an open ebook standard originally developed by the International Digital Publishing Forum (IDPF) and now maintained by the W3C following the organizations' merger in 2017. The first version carrying the EPUB name was approved in October 2007 as a successor to the Open eBook Publication Structure (OEBPS). An EPUB file is essentially a ZIP archive containing XHTML or HTML5 content documents, CSS stylesheets, images, fonts, and metadata organized according to the Open Packaging Format and Open Container Format specifications. The current major version, EPUB 3, supports reflowable and fixed-layout content, embedded multimedia, JavaScript interactivity, MathML equations, and rich accessibility features including semantic markup and media overlays for synchronized text and audio. A defining advantage is universal device support — unlike proprietary formats, EPUB works natively on virtually every non-Kindle e-reader, tablet, and reading application, from Apple Books and Google Play Books to Kobo and dozens of third-party apps. The reflowable text model is another core strength, automatically adapting pagination, font size, and margins to match any screen dimension and user preference. EPUB's open specification and active W3C stewardship ensure long-term preservation and vendor independence, making it the de facto standard for digital publishing across libraries, academic institutions, and commercial retailers worldwide.
Initial release: October 2007

Frequently Asked Questions

Why convert XLSX to EPUB?

EPUB is the standard eBook format — converting spreadsheet data to EPUB makes it readable on Kindles, tablets, and eReader apps.

What devices open EPUB?

Apple Books, Google Play Books, Kobo readers, Calibre, and most eReader apps on iOS and Android support EPUB natively.

Will tables survive in EPUB?

Table data is reformatted for reflowable reading. Complex multi-column layouts may be simplified to fit smaller screens.

Can I batch-convert XLSX files?

Yes — upload multiple XLSX files at once and Convertio will produce an EPUB for each in a single session.

Is this conversion free?

Basic conversions are free on Convertio. Premium plans offer expanded limits and priority processing for frequent use.

Do I need to create an account?

No registration required. Open Convertio in your browser, upload your XLSX, and download the EPUB — that is all.

XLSX to EPUB Quality Rating

4.5 (132 votes)
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