FB2 to EPUB
FB2 to EPUB converter: FictionBook files for any reader
To convert FB2 to EPUB, drop the .fb2 file in the box and download an EPUB with its chapters, notes and cover, readable in Apple Books, Kobo, Google Play Books or on a Kindle through Send to Kindle.
Convert a FB2 to EPUB
- Upload
- Convert
- Download
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Your EPUB is ready
Download EPUBDeleted from our server within an hour. Reading on a Kindle? Send it like this.
How did it turn out?
What went wrong?
Thank you. Your answer helps improve the converter; nothing from your file is kept.
- No sign-up
- Deleted within an hour
- Opens in any reading app
Free: 10 files a day. Only convert books you have the right to convert. DRM-protected books, such as most store-bought Kindle books, can't be converted.
File name fb2_cover_calibre_mi.png Really is a PNG
No errors or warnings detected.
What an FB2 file is
FB2, or FictionBook, is an XML ebook format that has been popular in Russia and Eastern Europe for years. It describes a book's structure rather than its look: sections, titles, epigraphs, poems and footnotes. Many apps outside that region never added support for it, so an EPUB is the easiest way to read an FB2 almost anywhere.
What comes across
Structure
Sections and titles become chapters in the contents list.
Notes
Footnotes and endnotes stay linked to the place they belong.
Cover and details
The cover picture, title and author from the file's description.
How it compares: 4 FB2 to EPUB converters tested
Tested 4 and 5 November 2026. One short FB2 test book, made from public-domain text with chapters, a table, a footnote, a poem and a cover, went through each converter with default settings. EPUBCheck, the official EPUB validator, checked every result.
| Converter | EPUBCheck errors | Warnings |
|---|---|---|
| epubwise Calibre 9.17 | 0 | 0 |
| Calibre (default settings) Calibre 9.13, the desktop program | 2 | 1 |
| FreeConvert | 2 | 1 |
| online-convert.com | 2 | 1 |
What the numbers say. The fault elsewhere is small but real: a PNG cover saved under a .jpg name, which a strict reader or an ebook store can refuse. epubwise renames it, so the EPUB passes. This is one short test book, so treat it as a check on correctness, not a measure of every FB2 file. We haven't measured CloudConvert, Convertio or AnyConv here yet.
Limits
Upload the .fb2 file itself; zipped .fb2.zip files need unzipping first. For a Kindle, send the EPUB with Amazon's service, as described in EPUB to Kindle, or make an AZW3 to copy over by cable. The conversion runs on Calibre, the free ebook program, on our server, and the file is deleted within an hour.
Questions
What about .fb2.zip files?
Unzip them first and upload the .fb2 inside.
Are poems and epigraphs kept?
Yes, they come across as their own blocks of text, set apart from the paragraphs around them.
Will the EPUB pass validation?
Our test FB2 came out with no EPUBCheck errors. Calibre's defaults, FreeConvert and online-convert.com each left 2 errors, from a PNG cover saved under a .jpg name.