Convert ODT to EPUB Online Free
Drag & drop your .odt file here, or click to browse
Converts to EPUB on secure servers · first daily conversion free · no signup
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Convert OpenDocument Text files to EPUB ebook format using LibreOffice on a secure server. Publish your LibreOffice or Writer documents as ebooks for Kindle, Kobo, iBooks, or any EPUB reader.
By ChangeThisFile Team · Last updated: March 2026
ChangeThisFile converts ODT to EPUB using LibreOffice on a secure server. Upload your OpenDocument Text file and get a reflowable ebook for any e-reader. Files are auto-deleted after processing. Free with no account needed.
OpenDocument Text vs EPUB: Format Comparison
Key differences between the two formats
| Feature | ODT (OpenDocument Text) | EPUB |
|---|---|---|
| Format type | Open XML document (ODF standard) | Open ebook container (XHTML + CSS + metadata) |
| Standard | ISO/IEC 26300 (ODF) | W3C / IDPF open standard |
| Primary use | Document editing and creation | Ebook reading and distribution |
| Layout | Fixed page layout with margins, columns, footers | Reflowable — adapts to any screen size |
| Navigation | Headings, bookmarks, page references | Chapter navigation, built-in table of contents |
| Software needed | LibreOffice, OpenOffice, or compatible editor | Any e-reader app or dedicated device |
| Best for | Writing, editing, printing, professional documents | Reading, publishing, e-reader distribution |
When to Convert
Common scenarios where this conversion is useful
Publishing LibreOffice Writer documents as ebooks
Authors and technical writers using LibreOffice can convert their ODT documents directly to EPUB for self-publishing or distribution via ebook platforms.
Creating ebooks from academic papers
Academic papers and theses written in LibreOffice Writer can be converted to EPUB for reading on e-readers, making long-form content more accessible.
Distributing organizational documents as ebooks
Policies, procedures, handbooks, and reference guides stored as ODT files can be converted to EPUB for employee access via mobile devices and e-readers.
Open-source publishing pipelines
Organizations using entirely open-source toolchains (LibreOffice for authoring) can export to EPUB for open distribution, staying within open standards throughout.
Who Uses This Conversion
Tailored guidance for different workflows
Authors
- Convert OpenDocument Text manuscripts to EPUB for publishing on Amazon Kindle, Apple Books, or Kobo
- Transform OpenDocument Text drafts to EPUB for sending advance review copies to beta readers
Publishers
- Convert OpenDocument Text titles to EPUB for distributing across multiple ebook retail platforms simultaneously
- Transform OpenDocument Text backlist titles to EPUB to make older catalogs available in modern formats
Readers
- Convert OpenDocument Text ebooks to EPUB for reading on your preferred e-reader device or app
- Transform OpenDocument Text books to EPUB to consolidate your library into a single compatible format
How to Convert OpenDocument Text to EPUB
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1
Upload your ODT file
Drag and drop your .odt file onto the converter, or click to browse. Files up to 50 MB are supported for free conversion.
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2
Server-side EPUB generation
Your ODT file is securely uploaded and converted to EPUB using LibreOffice. Document structure, headings, and paragraph styles are mapped to EPUB chapter elements.
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3
Download the EPUB file
Once conversion completes, click Download to save your .epub file. Transfer it to your e-reader or open in any EPUB-compatible app. The original file is auto-deleted.
Developers: convert via API →
Frequently Asked Questions
Yes, completely free. No signup required, no watermarks, and no usage limits for ODT files up to 50 MB.
ODT (OpenDocument Text) is the open ISO standard document format used by LibreOffice Writer, Apache OpenOffice, and other compatible applications. It is stored as an XML-based ZIP container.
Yes. Files are transferred over encrypted HTTPS and automatically deleted from our servers immediately after conversion. Nothing is stored.
Core formatting including headings, paragraphs, bold, italic, and lists is preserved. Fixed-layout features like print page margins, columns, and headers/footers do not translate to EPUB's reflowable format.
Newer Kindle devices (2022 and later) support EPUB natively. For older Kindle models, convert the resulting EPUB to MOBI using the EPUB to MOBI converter on ChangeThisFile.
Yes. Heading styles (Heading 1, Heading 2, etc.) in your ODT file are mapped to EPUB heading structure, creating navigable chapters and an auto-generated table of contents.
Embedded images are generally included in the EPUB output. Linked (non-embedded) images may not be resolved since the server does not have access to local file paths.
Most ODT files convert to EPUB in under ten seconds. Larger documents with many embedded images may take slightly longer.
ODT files up to 50 MB are supported for free conversion. Very image-heavy documents may approach this limit.
Conversion is performed by LibreOffice running on our secure server. Since LibreOffice natively uses the ODT format, it can export to EPUB with full fidelity to the document structure.
EPUB is a reflowable format — text reflows to fit the screen and users can resize the font. PDF is fixed-layout. For reading on phones and e-readers, EPUB provides a significantly better experience.
Yes. The free Calibre desktop application lets you edit EPUB metadata (title, author, cover image, ISBN), adjust the table of contents, and perform additional post-processing after conversion.
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