How do I convert epub to mobi using Calibre for this?

6 Answers 6


Yes, Calibre package contains a script called ebook-convert to convert ebooks between formats. You can install Calibre with

sudo apt-get install calibre


ebook-convert "book.epub" "book.mobi"

NB: Other formats are supported, too:

ebook-convert "book.azw3" "book.pdf"
  • FWIW, the quotes aren't strictly necessary.
    – kjprice
    Feb 3, 2016 at 3:29
  • 2
    To get an epub->pdf conversion to run, I had to make have xvfb installed and then run the ebook-convert command using: xvfb-run ebook-convert book.epub book.pdf Mar 2, 2016 at 23:33
  • I've figured out another way to use ebook-convert on a headless/server machine, without having to install Qt/X11 dependencies: askubuntu.com/a/1453851/182054
    – Mladen B.
    Feb 7, 2023 at 5:24

I found a script for batch conversion:

for book in *.epub; do echo "Converting $book"; ebook-convert "$book" "$(basename "$book" .epub).mobi"; done

It works good for me, but the process is pretty slow.


Install calibre. Works with any arbitrary folder depth.

find . -name '*.epub' -type f -exec bash -c 'ebook-convert "$0" "${0%.epub}.mobi" --prefer-author-sort --output-profile=kindle --linearize-tables --smarten-punctuation --enable-heuristics' {} \;

You can also do this without installing Calibre. This would be really handy on a Chromebook, for example. There is a free, online site called EPUB Converter that will let you upload the epub and it lets you then download the mobi equivalent.


Yes, you can use Calibre for epub to mobi conversion. They declare mobi as supported output format in their FAQ.

I don’t think there’s anything Ubuntu-specific in the question, so it would probably belong somewhere else.

  • 1
    I think this question is relevant because I wasn't aware that Calibre was available for Ubuntu. For some reason I thought it was like Scrivener and Windows/Mac only.
    – m0j0
    Feb 4, 2015 at 2:54

As of November 2021. I had to run the command using sudo.


sudo ebook-convert book.epub book.mobi

I didn't need the quotes, but you can use them if your file name has spaces. E.g:

sudo ebook-convert "book one.epub" "book one.mobi"

Everything else works as described in the accepted answer above.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .