ODT to EPUB Converter

Convert ODT to EPUB: What This Tutorial Covers

This walks you through turning an OpenDocument Text file (.odt) from LibreOffice or Apache OpenOffice Writer into a reflowable EPUB ebook that opens in Apple Books, Kobo, Google Play Books, Calibre, and most e-readers. It also covers the part most converters skip: EPUB reflows text to fit each reader's screen and font size, so print-layout details from your ODT change or disappear — and when that happens, a PDF is the better target.

How to Convert ODT to EPUB

1. Upload Your ODT File: Drag and drop your .odt onto the page, or click "+ Add Files" to browse. You can queue several ODT files and convert them in one batch.
2. Keep the Optimized Defaults: This conversion exposes no required settings — the defaults under Advanced Options are tuned to produce a valid EPUB 3 package with a navigable table of contents from your document's headings.
3. Convert: Click "Convert" and wait for the EPUB to build. Larger documents with many embedded images take longer because they upload and process before the file is ready.
4. Download: Save the .epub and open it in your reader, or side-load it to a device. No sign-up, no watermark.

Walk-through: Preparing an ODT That Reflows Cleanly

EPUB is reflowable by definition — the W3C EPUB 3.3 specification states publications "by default are intended to reflow to fit the available screen space." That means the converter maps your document's structure to ebook markup, not its page layout. A few minutes in Writer before converting makes the ebook far more readable:

• Use real heading styles, not bold text: Apply Heading 1 / Heading 2 from Writer's paragraph-style dropdown. The converter builds the EPUB's chapter navigation (the table of contents) from those styles. Text that just looks like a heading because it's big and bold produces no navigation entry.
• Insert page breaks for chapter starts: A manual page break (Insert, More Breaks, Page Break) before each chapter heading tells the converter where one section ends and the next begins, so chapters open cleanly on most readers.
• Keep images inline, not floating: Anchor images "as character" or "to paragraph" rather than letting them float behind or beside text. Floating frames have no fixed position once text reflows, so an inline anchor keeps each image near the paragraph it belongs to.
• Drop decorative layout: Multi-column sections, text in fixed-position frames, headers, footers, and page numbers are print constructs. EPUB has no fixed pages, so remove or simplify these before converting rather than expecting them to carry over.

What Survives Reflow and What Doesn't

Common Errors and How to Fix Them

• "My chapters don't show up in the table of contents" — The headings were styled as plain bold text. Reopen the ODT, apply Writer's Heading 1/Heading 2 styles to each chapter title, and convert again.
• "Images are in the wrong place or squeezed" — A floating or wrapped image lost its anchor during reflow. Re-anchor images as "as character" or "to paragraph" in Writer so each one stays with its paragraph.
• "My carefully designed pages look plain" — That is reflow working as intended, not a conversion fault. Columns, frames, and precise spacing are print-layout features with no equivalent in a reflowable ebook. If the design matters more than re-flowable text, convert to a fixed layout with ODT to PDF instead.
• "The EPUB won't open on my Kindle" — Older Kindles don't read .epub directly off the filesystem. Use Amazon's Send to Kindle (web, app, or email) — it accepts EPUB and converts it to the Kindle format on Amazon's side. See the section below for the size limits.

When This Doesn't Work

EPUB is the right target for novels, reports, essays, and other mostly-flowing text. It is the wrong target for anything where the visual layout is the point — magazine spreads, brochures, forms, worksheets, sheet music, or documents with multi-column pages and precise positioning. Reflow discards that layout, so the ebook will look stripped down no matter how the source was designed. For those, keep the fixed page layout with ODT to PDF. If you only need an editable Word copy rather than an ebook, use ODT to DOCX. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.

Send to Kindle Size Limits

If your EPUB is bound for a Kindle, Amazon's Send to Kindle enforces a size cap that depends on how you send it:

Most text-only ODT files convert to an EPUB far under these limits; only image-heavy documents get close.

Frequently Asked Questions

Can I send the converted EPUB to a Kindle?

Yes. Amazon's Send to Kindle (web uploader, desktop and mobile apps, or your @kindle.com email address) accepts EPUB and converts it to the Kindle format automatically. Through email the file must be 50 MB or smaller; the Send to Kindle web and app uploads allow files up to 200 MB. Note that Amazon no longer accepts the older MOBI format, so EPUB is now the format to send.

Will my ODT's page layout and page numbers carry over to the EPUB?

No. EPUB is reflowable, so it has no fixed pages — text re-wraps to each reader's screen and font size. Headers, footers, page numbers, multi-column sections, and exact page breaks are dropped or flattened during conversion. Body text, headings, lists, links, and images are preserved. If you need the exact page layout, convert to ODT to PDF instead.

How does the converter build the ebook's table of contents?

It reads the paragraph styles in your ODT. Titles styled with Writer's Heading 1, Heading 2, and so on become entries in the EPUB's navigation document. Text that is merely enlarged and bolded is treated as ordinary text and produces no navigation entry, so apply real heading styles before converting.

What happens to the fonts I used in Writer?

Fonts are not guaranteed to travel with the ebook, and most e-readers let the reader pick their own typeface and size regardless. Treat your document's font choices as a starting point rather than a fixed design — the reader's device has the final say over how the text looks.

Which EPUB version does this produce, and what readers open it?

It outputs an EPUB 3 package — a ZIP-based OCF container of XHTML and CSS, the structure defined by the W3C EPUB 3.3 Recommendation. EPUB 3 opens in Apple Books, Kobo, Google Play Books, Calibre, and most current e-readers; for Kindle, route it through Send to Kindle as described above.

Does converting back and forth lose anything?

Going ODT to EPUB is a one-way simplification: the ebook keeps your text and structure but discards print-layout formatting, so converting the EPUB back to a document will not restore the original page design. In our testing, a heading-styled ODT report converts to a cleanly navigable EPUB, but a multi-column, frame-heavy ODT loses that layout entirely — keep your original .odt as the master copy and convert from it whenever you need a different format.

Does the converter add a cover image to the EPUB?

No. It builds the ebook from your document's own content and heading structure, but it does not generate a cover thumbnail. If you want a cover on your reader's shelf, open the finished .epub in Calibre, choose Edit Metadata, and add a cover image there — it takes a few seconds and travels with the file.

Is there a size or length limit for ODT to EPUB?

There is no fixed page or word-count cap; the practical limit is upload size and time, so a very large, image-heavy document simply takes longer to upload and process. Keep the destination's own limits in mind too — if you plan to email the EPUB to a Kindle, Amazon caps email delivery at 50 MB (200 MB via the web and app uploaders), as shown in the table above.