XLS to FB2 Converter

Save XLS spreadsheet data as FB2 e-books online

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Structured E-Book

Transform your XLS into FB2 — an XML-based format that preserves document structure and works on a wide range of e-readers.

Online Conversion

No desktop software required. Open convertio.tools in any browser, upload your XLS, and get an FB2 e-book back.

Files Stay Private

Uploaded XLS spreadsheets are deleted right after conversion. FB2 outputs are purged from servers within 24 hours.

How to convert XLS to FB2

1

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

2

Choose fb2 or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your fb2 file right afterwards

About formats

XLS is the binary spreadsheet format of Microsoft Excel, first introduced with Excel 1.0 for Macintosh in September 1985 and becoming the dominant spreadsheet format worldwide. The format stores workbooks as OLE2 compound document files using the Binary Interchange File Format (BIFF), organizing sheets, cells, formulas, formatting, charts, pivot tables, macros, and metadata across multiple internal streams. Each cell record encodes the cell's value (number, string, boolean, error, or formula), position, and formatting index, while shared string tables and style records reduce redundancy. The format evolved through BIFF versions (BIFF2 through BIFF8), with BIFF8 (Excel 97) establishing the structure used through Excel 2003. XLS supports up to 65,536 rows and 256 columns per sheet, a limit that drove the creation of XLSX. One advantage is universal spreadsheet compatibility — XLS files are recognized by every major spreadsheet application including LibreOffice Calc, Google Sheets, Apple Numbers, and dozens of programming libraries across all platforms. The format's mature feature set is another strength: XLS handles complex formulas, conditional formatting, data validation, named ranges, array formulas, external references, and VBA macros. Although XLSX replaced XLS as the default in Office 2007, the binary format persists in financial institutions, legacy reporting systems, and any environment where Excel 97-2003 compatibility is required.
Developer: Microsoft
Initial release: September 1985
FB2 (FictionBook) is an XML-based ebook format created by Dmitry Gribov in 2004, designed to provide a clean semantic description of a book's content independent of its visual presentation. Unlike page-layout formats, FB2 encodes structure — title, authors, chapters, annotations, genres, epigraphs, poems, footnotes, and binary attachments (typically cover images) — within a single well-formed XML document. This structural approach means reading applications have full control over rendering, allowing the same file to adapt perfectly to a small phone screen or a large e-ink reader. FB2 became enormously popular in Russia and Eastern Europe, serving as the dominant format on major Russian digital libraries and ebook distribution platforms. One significant advantage is metadata richness: the format's schema mandates detailed bibliographic information including author, translator, series position, publication date, and genre classification, making library management and discovery straightforward. The plain-text XML foundation is another strength — FB2 files are human-readable, easy to validate, and simple to transform using standard XML tools like XSLT. The format specification is freely available on GitHub, and a wide ecosystem of readers, editors, and converters supports it across all major platforms, from desktop applications like Calibre to dedicated e-readers with native FB2 rendering.
Developer: Dmitry Gribov
Initial release: 2004

Frequently Asked Questions

Why convert XLS to FB2?

FB2 is an XML-based e-book format popular in Eastern Europe — converting from XLS lets you read structured data on FB2-compatible readers.

What readers support FB2?

FBReader, CoolReader, Calibre, Moon+ Reader, and PocketBook devices all handle FB2 files natively for comfortable reading.

Does FB2 keep my data organized?

FB2 uses semantic XML structure, so your XLS content is organized into readable sections with preserved logical hierarchy.

Is this conversion free?

Yes — XLS to FB2 conversion is free on convertio.tools. Premium plans offer extended limits and priority queue access.

Can I batch-convert to FB2?

Upload several XLS files at once on convertio.tools and convert them all to FB2 in a single batch session.

XLS to FB2 Quality Rating

4.5 (15 votes)
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