ODT to FB2 Converter

Convert ODT to FB2 online — free FictionBook output

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eReader Compatible

FB2 is natively supported by PocketBook, FBReader, and numerous reading apps — your content is instantly accessible.

Structured Output

Your ODT headings and paragraphs translate into properly structured FB2 sections and chapters.

File Privacy

Uploads are deleted right after processing. Converted FB2 files are purged from servers within 24 hours.

How to convert ODT 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

ODT (OpenDocument Text) is the word processing format defined by the OpenDocument Format (ODF) standard, developed by the OASIS technical committee and first published as ODF 1.0 on May 1, 2005, later adopted as international standard ISO/IEC 26300. An ODT file is a ZIP archive containing XML documents that describe text content, formatting styles, metadata, and settings using a vendor-neutral, royalty-free specification. The document body resides in content.xml with styling rules in styles.xml, while embedded images, fonts, and other resources are stored alongside in the package. The format supports rich word processing features including paragraph and character styles, tables, footnotes, tracked changes, table of contents generation, bibliography management, mail merge fields, and embedded vector and raster graphics. ODT serves as the native format for LibreOffice Writer, Apache OpenOffice Writer, and Calligra Words, and can be imported by Microsoft Word, Google Docs, and other commercial tools. One advantage is vendor independence — ODT is governed by an open standard rather than a single company, ensuring long-term document accessibility free from proprietary lock-in. This makes ODT particularly important for government agencies, educational institutions, and organizations with archival mandates. The XML-based architecture provides another strength, enabling programmatic document generation and processing using standard tools in any programming language.
Developer: OASIS
Initial release: May 1, 2005
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 ODT to FB2?

FB2 is widely used by eReaders and reading apps popular in Russia and Eastern Europe — ideal for that audience.

What is FB2 format?

FictionBook (FB2) is an XML-based eBook format that stores structured text with metadata, popular in CIS countries.

What reads FB2 files?

FBReader, CoolReader, PocketBook devices, and many eReader apps on Android and iOS support FB2 natively.

Is the conversion free?

Yes — Convertio converts ODT to FB2 at no cost. Premium tiers handle larger files and higher volumes.

Will my text structure be preserved?

Headings, paragraphs, and basic formatting map to FB2 structural elements during the conversion.

Can I batch-convert documents?

Upload several ODT files and convert them all to FB2 in one session — efficient for multi-chapter projects.

ODT to FB2 Quality Rating

4.8 (700 votes)
You need to convert and download at least 1 file to provide feedback!