In recent years, eBooks and eBook readers have changed the way of book reading. eBooks become more and more prevailing due to the wide use of smart phones and portable devices. Its convenience, environmental protection and low cost also make eBooks widely welcomed. Most of the eBooks out there are likely to be kept in popular EPUB format. However, some devices only read eBooks in MOBI format rather than that in EPUB format. Thus, there is a need to convert EPUB to MOBI format especially when you are intended to view them on those devices like Kindle. The best EPUB to MOBI converter will be required under such circumstance so that you can convert EPUB to MOBI eventually.

Part 1: EPUB vs. MOBI

What is the EPUB format?

EPUB is the standard eBooks file format using the “.epub” file extension. As a free, open-source, open-standard system based on HTML and CSS, EPUB is widely used by Apple, Kobo, Barnes & Noble, Sony, iBooks, Nook, and Google e-readers.

Pros Cons
  • Based on HTML, work with most software.
  • Contain audio files, videos and rich images for a far richer reading experience.
  • Widely accepted format that is easy to read on all types of small devices.
  • With Digital Rights Management (DRM) capabilities to protect a publishers’ work from reproduction.
  • Complex and stringent to create a zip archive for EPUB..
  • To develop an EPUB document requires prior knowledge on the functioning of an EPUB file.
  • EPUB files are usually read-only, not easy to be edited unless you are experienced in coding languages.

What is the MOBI format?

MOBI, short for Mobipocket, is originally developed by Amazon as exclusive eBook format for all its Kindle readers. It is a proprietary compressed binary file containing the XHTML and XML files and other Kindle eBook components. Its later versions such as AZW have Javascript capabilities. MOBI has two standards: the old standard KF7(MOBI7) and the new standard KF8 (MOBI8/AZW3). What’s more, MOBI files are DRM-protected, which means an eBook file in MOBI format is copyrighted and can only be read on Kindle devices logged on to the associated Amazon account that purchased the book.

Pros Cons
  • MOBI has automatic reflowable text that adjusts to the screen size of just about any reading device.
  • MOBI is usually plain-text and have a lower file size.
  • MOBI is secure under Digital Rights Management (DRM).
  • Highly flexible: Pages, drawings, annotations, highlights, bookmarks, corrections and notes can be added.
  • Amazon-exclusive, readable only on Amazon’s Kindle devices.
  • Lower quality of image.
  • MOBI can’t be edited directly.
  • The old standard MOBI (MOBI7) doesn’t support adjustment of the layout, like Fonts, Overstriking, etc.

Part 2: 5 Best EPUB to MOBI Converters in 2023

Generally, most eBook readers support EPUB format, which means it is quite easy to read your favorite books on almost any device you want. However, if you want to read the EPUB eBooks on Kindle devices, you need transform EPUB to MOBI due to the file compatibility. How to convert EPUB to MOBI format effectively and efficiently, then? The 5 best EPUB to MOBI converters introduced in this article will be most helpful.

  Leawo eBook Converter

Leawo Prof. DRM is a complete suite of top-ranking DRM-removal program that integrates several converter modules, including DRM video converter, DRM music converter, DRM audiobook converter, DRM eBooks converter and DRM Spotify converter. Working as a DRM video converter, it removes DRM from iTunes Movies and removes DRM from iTunes TV shows, etc. Certainly, you can just apply DRM eBooks converter to be an efficient DRM remover and EPUB to MOBI converter. You can remove the DRM protection of eBooks from Amazon kindle, Kobo, Adobe, etc. and convert to DRM-free EPUB, MOBI, AZW3, TEXT, etc. with the original quality reserved at high speed. Since EPUB eBook files are encrypted by DRM protection, you can remove DRM easily and convert EPUB to MOBI for Kindle or convert to other DRM-free formats compatible with any other devices.


  • Remove eBooks’ DRM from Amazon Kindle, Kobo, Adobe, etc.
  • Support almost all eBook input formats, such as EPUB, MOBI, PRC, HTMLZ, etc.
  • Convert eBook files to DRM-free MOBI, EPUB, AZW3, TXT and other universal file formats.
  • DRM-removed files are of the same quality as original eBooks.
  • Automatically scan & detect e-Reader.
  • Available for both Mac and Windows operating system.

  Calibre Converter

Calibre, as free download, may be one of your favorite EPUB to MOBI converters. It not only converts EPUB to MOBI, but also views the converted files for Kindle even before you transfer them to an actual Kindle device. Besides, Calibre is an open-source program that works on the Windows, Mac, and Linux operating systems. Calibre convert EPUB to MOBI program is helpful when the input EPUB files are DRM-free.


  • Necessary editing like adjusting the metadata, font and text size, table of contents, and many more is supported.
  • Easily manage your eBook collections.
  • Totally free to download and use with no ads.
  • Run on different platforms, including Windows, Mac, and Linux.

  Hamster eBook Converter

As an excellent and free application, Hamster eBook Converter converts any eBook to a different format to make it compatible with other devices. It supports eBook conversion on Windows, including conversion between several generic eBook formats as well as device specific eBook file formats, like EPUB, PRC, MOBI, LIT, LRF, FB2, PDF, PDB, TXTZ, and more. With very clean and intuitive GUI, you can easily convert eBooks to specified format compatible with various devices.


  • A variety of formats supported, including FB2, LIT, HTMLZ, TXT, Adobe PDF, PDB, LRF, PUB and more
  • Compatible with Windows 2000, Vista, 7, 8 and XP.
  • Works on various devices, including Amazon Kindle, Microsoft, Blackberry, Apple iPad, ASUS, etc.

  To ePUB

To ePUB is one of the best online tools to convert different types of eBook documents to a variety of formats, including EPUB, PDF, Kindle MOBI/AZW3, FB2, etc. Though it limits file size in 25MB and takes a lot time when converting eBook files, it easy to use with an accessible interface.


  • Easily handle batch conversions of up to 20 files between different formats.
  • Support a limited number of formats including EPUB, AZW3, FB2, MOBI, LIT, and LRF.
  • Supported by frequently-used e-Readers including Sony Reader, Nook, iPhone, iPad, and Kobo.


Kitaboo is a cloud based digital publishing platform that empowers you to convert your PDF documents into ePUB3 and Mobi/KF8 eBooks. The cloud-based technology safely publishes and distributes eBooks on all mobile platforms including iOS, Android and Windows as well as corresponding devices such as smart phone, tablet or a PC.


  • Various interactive features supported, such as video links, external hyperlinks, audio files and more.
  • DRM protected & encrypted files can be accessed with unique access codes.
  • Enjoy your eBooks experience offline.
  • Automated ePub Conversion.

Part 3: Conclusion

After reading this article, you must have got all necessary information of the five best EPUB to MOBI converters. Leawo eBook Converter, as part of Leawo Prof. DRM, has strong features in easily removing DRM protection from EPUB and converting EPUB TO MOBI for Kindle. However, Calibre is free but not user-friendly enough, which may give a tough time to new users. And DRM-protected files are not supported by Calibre. Hamster eBook Converter has easy-to-use user interface but no advanced options for configurations. To ePUB supports many eBook formats conversion online, but it takes even an hour for a file conversion. Kitaboo eBook converter is a paid service that can not customize the output, though it is an excellent tool to publish eBooks on various devices and convert EPUB automatically. In general, Leawo eBook Converter is the top EPUB to MOBI converter that meets all your needs.

Part 4: How to Convert EPUB to MOBI with Leawo eBook Converter?

Leawo eBook Converter can effectively convert EPUB to MOBI as well as convert MOBI to EPUB as needed. Here comes the guide on how to convert EPUB to MOBI with Leawo eBook Converter.

Step 1: Download Leawo Prof. DRM

Download and install Leawo Prof. DRM on your PC since it integrates Leawo eBook Converter for eBook conversion.

  • Leawo Prof. DRM
  • Leawo Prof. DRM

    - The most complete 5-in-1 DRM removal program in the world
    - 50x faster to remove DRM
    - Support multi-task processing
    - Support batch conversion
    - User-friendly interface and practical functions
    - Support Windows & Mac OS

Step 2: Import the file to the program

Run the program to enter eBook Converter, click on “Add Files” button to import the source EPUB files you need to convert to MOBI for Kindle from your PC or renew the device to automatically detect the EPUB files for importing. Or you can directly drag and drop EPUB files to the program.


Step 3. Set MOBI as the output format

Choose an imported eBook file and select the “edit” button to open a drop-down list where you can tick “mobi” and choose “Apply to all eBook files” to apply MOBI as the output format for all the files imported here.


Step 4: Set Output Path

Click on “…”button at the bottom of the main interface to choose an output path for containing the converted files.


Step 5: Remove DRM and Convert EPUB to MOBI

Click on the blue “Convert” button at the bottom right corner to start removing the DRM from EPUB files and then converting the DRM-free EPUB to MOBI in seconds.