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How to Convert ePub to MOBI with Online & Offline Methods

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ePub and MOBI are two common formats for electronic books, and they are suitable for different readers and devices. Sometimes, we may need to convert an ePub-formatted e-book to MOBI format for reading on devices like Kindle. In such cases, specific tools can be used to achieve this purpose.

epub to mobi

 

Part 1. What Is ePub & MOBI?

1.1 What Is ePub & MOBI?

EPUB (Electronic Publication) and MOBI (Mobipocket) are both formats for electronic books (eBooks) used to read books on digital devices. EPUB is a more universal and open standard suitable for various devices and platforms, while MOBI is more focused on Amazon's Kindle platform. Here are some differences between them:

EPUB

  • Open Standard: EPUB is an open digital book standard developed by the International Digital Publishing Forum (IDPF). This means anyone can use this standard to create and distribute EPUB files.
  • Platform Support: EPUB files can be read on various devices, including e-book readers, tablets, smartphones, and computers. It uses an XML-based markup language to define content.
  • Adaptive Layout: EPUB supports adaptive layout, automatically adjusting the presentation of content based on different devices' screen sizes and resolutions, providing a better reading experience.
  • No Digital Rights Management (DRM) Restrictions: EPUB format typically supports both DRM and non-DRM versions, allowing some books to be freely distributed across different devices.

MOBI

  • Proprietary Format: MOBI is a proprietary format created by Mobipocket, resulting in some limitations on its usage. This means books in MOBI format may be subject to the support level of specific devices or applications.
  • Amazon Kindle: MOBI format is mainly compatible with Amazon's Kindle e-book reader. (In fact, Amazon has adopted a MOBI-based variant format called AZW on its Kindle devices.)
  • Relatively Simple: MOBI format is relatively simpler, using a binary format instead of XML, as used in EPUB.
  • HTML Tag Support: MOBI supports embedding HTML tags, allowing some books to include richer formatting and content.

1.2 Why Do You Need to Convert ePub to MOBI?

  • If you own a Kindle, as Kindle primarily supports MOBI format, you may need to convert EPUB-formatted e-books to MOBI for reading on Kindle.
  • If you want to publish your own e-book directly through Kindle, you need to convert EPUB files to MOBI format to meet Amazon's requirements.
  • Some e-book readers or apps may better support MOBI format, and sometimes you may need to convert EPUB to MOBI for better compatibility and reading experience.

Part 2. How to Change ePub to MOBI with Offline Tools

To convert EPUB to MOBI, you can use professional conversion tools or e-book management software such as Calibre. These tools help users easily convert files from one format to another, ensuring the converted files display and read correctly on the target device.

Tool 1. Kindle Previewer

Kindle Previewer is a free desktop application developed by Amazon to help e-book publishers and authors preview and test their works' display on Kindle devices. The tool supports various Kindle devices, including different models of Kindle e-book readers and tablets.

With Kindle Previewer, users can simulate different screen sizes and resolutions, check the e-book's format, layout, and style to ensure the final presentation on Kindle devices meets expectations. This allows e-book creators to optimize their works, provide a better reading experience, and ensure their publication in the Kindle store complies with Amazon's standards.

The steps to convert an ePub file to MOBI using this software are as follows:

1. Download and install Kindle Previewer.

2. Open Kindle Previewer, click the "Open book" button, and select the ePub file you want to convert.

3. Kindle Previewer will automatically start the conversion and display a preview of the results.

4. After conversion, you can select "Export" from the menu in the upper-left corner to save the converted MOBI file to your computer.

5. Copy the MOBI file to the "documents" directory of your Kindle device or app, and you can start reading.

You may also need:

How to Read MOBI Books on iPhone/iPad by Converting MOBI to ePub?

Unlocking Compatibility: How to Convert MOBI to ePub for Any eReader

Tool 2. Calibre

Calibre is an open-source e-book management software that supports multiple platforms, including Windows, macOS, and Linux. This powerful tool allows users to manage, organize, convert, and read e-books.

Calibre can handle various e-book formats, including EPUB, MOBI, PDF, etc., and provides rich library management features such as metadata editing, cover adding, etc. Its built-in e-book converter supports converting e-books from one format to another to suit different reading devices.

Additionally, Calibre has news source fetching capabilities, converting online news content into e-book format. Overall, Calibre is a comprehensive and flexible e-book tool suitable for e-book enthusiasts, publishers, and self-publishers.

To convert an ePub file to a MOBI file using Calibre, you can follow these steps:

1. Install and open the Calibre software, click "Add books" in the upper-left corner, and select the ePub file you want to convert.

2. Select the e-book to be converted, click "Convert books", then configure the various properties of the profile in the new pop-up window, and choose "Output format" as MOBI.

3. After the conversion, you can click on "MOBI" next to the "Format" option on the right side of the software to directly view the converted MOBI file.

Tip: The path of all e-books from the Calibre Library: C:\Users\Administrator\Calibre Library

Part 3. How to Convert ePub to MOBI with Online Tools

Online tools are a type of software that provides services over the internet, allowing us to complete various tasks in a web browser without the need to download or install any additional software.

Their usage is relatively straightforward, with user-friendly interface designs. You simply upload the file, configure the parameters, click the "Start" button, and download the file. We won't go into too much detail, only highlighting some important points.

Online tools have several advantages:

  • No need to download additional software. This saves storage space and network bandwidth, and avoids potential issues during installation.
  • Faster processing speed. Online tools typically use cloud servers for file conversion, utilizing more powerful computing capabilities to enhance efficiency and quality.
  • Free trial usage for temporary needs. Many online tools offer a certain number of free trial uses, allowing us to perform simple file conversions for free or at a low cost. This is convenient for users who only occasionally need to convert files.

However, online tools also have some drawbacks:

  • Not friendly for large files due to upload, processing, and download times. Uploading files to servers, waiting for processing, and then downloading the converted files consume time and network bandwidth. For large files, this process may take a considerable amount of time or even result in timeouts or failures.
  • May not be suitable for processing too many files for free users. Online tools often impose limits on the number, size, and format of files for free users. If the files to be converted exceed these limits, users may need to pay or use alternative tools.
  • Not suitable for confidential files. Online tools involve file upload and download, posing security risks. If files contain sensitive or confidential information, it's advisable not to use online tools, or to use reputable tools and encrypt files both before and after conversion.

These online tools provide a convenient and fast way to convert ePub to MOBI. They are ideal for temporary, small-scale conversion needs. However, users should weigh the pros and cons when choosing to use these tools, considering specific requirements, file sizes, and even their own budget (in many cases, free options are sufficient).

Site 1. ACONVERT

URL: www.aconvert.com/ebook/epub-to-mobi

Conversion Effectiveness Rating: ★★★☆☆

Possible Formatting Errors: Yes

Advertisements: Yes

Upload Sources: Local, URL

Configurable Parameters: "Embed fonts", "Base font size", "Margin", "Metadata", and "Cover image"

Free Concurrent Tasks for Free Usage: 1

Maximum Number of Uploaded Files: 10

Maximum File Size for Processing: 40MB

Special Feature: "QUICK CONVERSION" function (Quickly start conversion by selecting source file and target format without entering the directory)

Price: Free

Site 2. CloudConvert

URL: cloudconvert.com/epub-to-mobi

Conversion Effectiveness Rating: ★★★☆☆

Possible Formatting Errors: Yes

Advertisements: No

Upload Sources: Local, URL, Google Drive, Dropbox

Configurable Parameters: None

Free Concurrent Tasks for Free Usage: 5

Maximum Number of Uploaded Files: 25

Maximum File Size for Processing: 100MB

Special Feature: Batch task processing; provides API

Price:(Different prices for credits based on the quantity purchased)

  • PACKAGE: $17.00 ($0.0170/credit)
  • SUBSCRIPTION: $9.00/month ($0.0090/credit)

Site 3. FreeConvert

URL: www.freeconvert.com/epub-to-mobi

Conversion Effectiveness Rating: ★★★★☆

Possible Formatting Errors: Yes

Advertisements: Yes

Upload Sources: Local, URL, Google Drive, Dropbox

Configurable Parameters: "Optimize for e-book reader", "Heuristic processing", etc.

Free Concurrent Tasks for Free Usage: 1

Maximum Number of Uploaded Files: 10

Maximum File Size for Processing: 1GB

Special Feature: Can optimize files specifically for certain Kindle models; provides API

Price:

  • Basic: $9.99/month
  • 24-h Pass: $12.99/one time
  • Standard: $14.99/month
  • Pro: $25.99/month

Site 4. EPUB2MOBI

URL: epubto.mobi

Conversion Effectiveness Rating: ★★★☆☆

Possible Formatting Errors: Yes

Advertisements: Yes

Upload Sources: Local

Configurable Parameters: None

Free Concurrent Tasks for Free Usage: Unlimited

Maximum Number of Uploaded Files: 10

Maximum File Size for Processing: 100MB/file

Special Feature: Free

Price: Free.

Learn more:

Editing ePub eBooks Made Easy: Essential Techniques and Tips

Multimedia Magic: How to Enrich Your ePub with Audio and Video Elements

Tip for the Opposite: How to Convert MOBI to ePub in Coolmuster ePub Converter

Coolmuster ePub Converter is a professional e-book conversion tool that supports various formats such as EPUB, MOBI, PDF, TXT, etc. It features an intuitive user interface and batch conversion capabilities. Its main advantage lies in preserving the original format and quality, ensuring compatibility of the converted e-books on various devices and reading platforms. You can easily use this software to convert e-book files from ePub to MOBI. Whether online or offline, you can use this ePub converter to convert files to ePub.

Key Features

  • Batch add up to 100 files at once and convert them to ePub format.
  • Supports over 5 popular formats (such as .mobi, .doc, .pdf, .html, .txt, etc.).
  • Retains the original text, images, graphics, etc., in ePub e-books without any loss.
  • Compatible with almost all popular portable devices, including iPad, iPhone, iPod touch, Nook Tablet, Surface, PSP, Sony Reader, etc.
  • Converts a 500-page document to an ePub e-book in less than 1 minute.

To achieve the conversion from MOBI to ePub using this tool, follow these steps:

01Download, install, and run the software, then choose the conversion type. You will see five different conversion types to choose from: HTML to ePub, PDF to ePub, MOBI to ePub, Text to ePub, and Word to ePub. Choose "MOBI to ePub" option.

convert mobi to epub

02Click "Add File/Folder" to import the files.

add a file

03Click the "Browse" button to select the output folder. Then click "Start" to begin the conversion, and once completed, you can find your converted files in the specified folder.

conversion completed

Summing Up

In conclusion, ePub and MOBI are two different e-book formats, each with its own pros and cons. If you want to read ePub files on Kindle devices or apps, or MOBI files on other platforms, you need to convert them to the respective formats. There are many online and offline methods to help you achieve this goal, and you can choose the right tool based on your needs and preferences. Regardless of the method you choose, the process of converting ePub and MOBI is simple and fast, requiring just a few steps to complete. We hope this article helps you better enjoy the pleasures of electronic reading!

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Mastering the Art of Digital Publishing: How to Make ePub Files on Mac

Unlocking eBook Freedom: How to Convert Any Book to ePub Format

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Unlocking the Power of Metadata: A Guide to Editing ePub Book Details

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