EPUB to FB2
Convert your EPUB files into FB2 format.
How to convert an EPUB to FB2 online
Upload your EPUB book
Drag the .epub file you want to convert, or click to select it from your computer.
The server converts it with Calibre
Your file is uploaded to our server, where Calibre transforms it into FB2, a format widely used in e-readers from Eastern Europe.
Download your FB2 file
As soon as the conversion finishes, you download your book in FB2 and the original EPUB is deleted from the server.
Why convert your EPUB to FB2 on PDFDocks?
If you need to read a book on a device or app that only supports FB2 — common on e-readers in Russia and Eastern Europe — converting your EPUB to this format makes it possible. The conversion requires uploading the file to our server, because FB2 cannot be generated with just JavaScript in your browser — we process it with Calibre. Your file is automatically deleted right after the conversion, with no copies saved.
Will the FB2 be compatible?
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The file is uploaded to our server because it's necessary to process it with Calibre, but it's deleted immediately after the conversion.
Do I need to create an account to use this tool?
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Yes. Both text formatting and images embed in the FB2.
Why does this tool upload the file?
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Because generating a valid FB2 requires Calibre, which can only run on a server, not directly in your browser.
Is the book format preserved in the conversion?
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Yes, the text and overall structure of the book are preserved when converting to FB2.
Which readers are compatible with FB2?
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It is very popular on e-readers in Russia and Eastern Europe, although many Western reading apps also support it.
How long does the conversion take?
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Usually just a few seconds, although it may vary depending on the file size and server load at that moment.
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