How to Convert EPUB to MOBI in a Few Clicks

The quickest way to convert EPUB to MOBI is with free desktop software such as Calibre or a trusted online converter. Add your EPUB file, choose MOBI or AZW3 as the output format, and click convert — the tool rewrites the file into a Kindle-friendly standard while keeping your chapters, cover and formatting intact. Once the converted file is ready, transfer it to your Kindle by USB cable, the Send to Kindle app, or by emailing it to your personal Kindle address. The tools below make the whole process quick and painless.

Best Conversion Tools

To convert your EPUB to MOBI or AZW3, we recommend one of the following tools:

1. Epub2kindle.com is a great free online option that’s specifically designed for converting EPUB to AZW3. Just drag and drop one or more EPUB files and once it’s converted simply click download. Several languages are supported.
   
   
   
   
   
2. Zamzar.com is a free multi-file conversion site so you can choose to convert your EPUB to MOBI or AZW3. Simply add your EPUB files, select the conversion format such as MOBI or AZW3, and click convert now.
   
   
   
   
   
3. If you want a great free offline solution, we recommend you install Calibre. Calibre is an open-source completely free eBook manager capable of converting to and from many eBook format types including EPUB to MOBI and AZW3. Once you have added an EPUB to your library, just click the convert books icon on the ribbon menu.
   
   
   
   

Now that you’ve converted your EPUB to MOBI or the AZW3 Kindle format, check out our in-depth article on How to Send eBooks to Your Kindle.

EBook Formats

Here’s a bit more detail on eBook formats:

• EPUB: A vendor-neutral, open-standard and by far the most ubiquitous eBook format. Supported by almost all eBook readers except Kindle i.e. Nook, Kobo, Sony Reader etc, an EPUB is really an archive of Web Standards including HTML, CSS, images, and SVG. In EPUB 3, even Javascript code, audio and video assets can be added. EPUB eBooks can optionally be protected using a DRM scheme such as Adobe’s ADEPT DRM.
  
  
• MOBI: Just like EPUB, MOBI is also derived from the old OEB format. They use similar components, although, unlike EPUB, MOBI is an Amazon-owned proprietary format originally developed for the Mobipocket Reader. Also like EPUB, these days most MOBI eBooks are DRM-free. However, if Amazon converts them to AZW3 then they are likely to be protected by their DRM scheme.
  
  
• AZW3: Also known as KF8 or Kindle Format8, this format was released alongside the Kindle Fire. It contains more complex formatting options than MOBI as well as considerable performance improvements. You can expect the archive files to be considerably smaller in size. This is the most popular format for most of the current Amazon Kindle devices, although AZW4, AZW6, and the most advanced AZW8 format, are all out there.