EPUB to MOBI
Convert your EPUB books into MOBI format for Kindle.
How to convert an EPUB to MOBI 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 MOBI format for Kindle.
Download your MOBI file
As soon as the conversion finishes, you download your eBook and the original EPUB is deleted from the server.
Why convert your EPUB to MOBI on PDFDocks?
MOBI is still necessary for reading books on older Kindles, which don't natively support EPUB. Conversion requires uploading the file to our server because MOBI can't be generated with JavaScript alone in the browser — we process it with Calibre. Your file is automatically deleted right after conversion. If your Kindle is relatively recent, our EPUB to AZW3 tool would likely be better for you, as that's the format used by current models.
Which Kindles support MOBI?
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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 conversion.
MOBI or AZW3, which do I need for my Kindle?
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Newer Kindles use AZW3; MOBI is mainly compatible with older models. If you're unsure, try AZW3 first.
Do I need to create an account to use this tool?
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PDFDocks cannot convert DRM-protected books. Remove protection first.
Why does this tool upload the file?
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Because generating a valid MOBI requires Calibre, which can only run on a server, not directly in your browser.
Is the book's formatting preserved in the conversion?
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Yes, the text, images, and overall structure of the book are preserved when converting to MOBI.
How long does the conversion take?
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Usually a few seconds, though it may vary depending on the file size and server load at that moment.
Tools
EPUB to PDF
Convert your EPUB books into PDF, ready to print or read on any device.
PDF to EPUB
Turn a PDF into a reflowable EPUB book for e-readers.
PDF to MOBI
Convert a PDF into MOBI format, compatible with older Kindle devices.
MOBI to PDF
Convert your MOBI files into PDF so you can read them on any device.
AZW & AZW3 to PDF
Convert Kindle AZW or AZW3 books into PDF format.
PDF to AZW3
Convert a PDF into AZW3 format to read on your Kindle.
MOBI to EPUB
Convert your MOBI files into the more universal EPUB format.
AZW & AZW3 to EPUB
Convert your AZW or AZW3 files into EPUB format.
EPUB to AZW3
Convert your EPUB files into AZW3 format.
CBR & CBZ to PDF
Convert your CBR or CBZ files into PDF format.
CBR & CBZ to EPUB
Convert your CBR or CBZ files into EPUB format.
DJVU to PDF
Convert your DJVU files into PDF format.
TXT to PDF
Convert your TXT files into PDF format.
TXT to EPUB
Convert your TXT files into EPUB format.
RTF to PDF
Convert your RTF files into PDF format.
PDF to RTF
Convert your PDF files into RTF format.
RTF to EPUB
Convert your RTF files into EPUB format.
EPUB to RTF
Convert your EPUB files into RTF format.
FBZ to PDF
Convert your FBZ files into PDF format.
FBZ to EPUB
Convert your FBZ files into EPUB format.
FB2 to PDF
Convert your FB2 files into PDF format.
PDF to FB2
Convert your PDF files into FB2 format.
FB2 to EPUB
Convert your FB2 files into EPUB format.
EPUB to FB2
Convert your EPUB files into FB2 format.
