The 7 Best ePUB Converters

Coletta Teske is a Lifewire writer focusing on consumer electronics. She has 30 years' experience writing for Adobe, Boeing, Microsoft, and many others.

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Need to convert an ePUB file to MOBI or another e-book format so that you can read it on your Amazon Kindle or other types of e-readers? Use one of these free ePUB converters.

Manage an E-book Library: Calibre

• Operates on Windows, macOS, and Linux.
• Converts files to MOBI, AZW3, PDF, and more.
• Free download with no ads.

• Somewhat complex for new users.
• Help files are difficult to follow.
• Can’t open DRM-protected files.

Calibre is an open-source ePUB converter and e-book library management app. Calibre contains all the tools you need to download e-books to your device, read e-books, and organize e-books into categories. You'll have many options when you convert e-book files from one format to another. For example, you can:

• Edit the metadata.
• Change the text size and font.
• Create a table of contents.
• Replace text with regular expressions.
• Customize the output page size.

Convert Anything: Convertio

• A Chrome extension is available.
• Save files to Google Drive and Dropbox.
• Easy to use.

• 100 MB maximum file size.
• Cannot customize output files.
• Only converts files to EPUB, AZW3, and PDF formats.

Sometimes e-book converters get hidden along with other types of file converters. Convertio is one of those web apps that converts thousands of file formats, e-books included. Converting e-books with Convertio is easy. Upload your file, choose an e-book format, and you're done. There's also a Convertio extension for Google Chrome.

Best ePUB to PDF Converter: Zamzar

• Converts files to AZW, AZW3, EPUB, MOBI, and PDF.
• Simple to use.
• Uses HTTPS SSL 128-bit encryption to transfer files.

• Limited to 5 file conversions per day.
• Download files are saved for 24 hours.
• Uploaded files limited to 50 MB per day.

Another free and easy-to-use online ePUB converter is Zamzar. Zamzar converts thousands of file formats, not only ePUB files. You can even convert PDFs to ePub files. After converting a file, be sure to download it within a day; after that, Zamzar will delete it.

If you need extra ePUB conversion services, such as larger file sizes and online storage, you can sign up for a subscription. You can also download the Zamzar extension for Google Chrome.

Convert E-books on Android: Ebook Converter for Android

• Converts EPUB to MOBI, PDF, and AZW3.
• Saves files directly to your device.
• Easy to use.

• Must be online to convert files.
• Original file is deleted after the conversion.
• Converted files are deleted after an hour.

Ebook Converter is a mobile app for Android devices that converts e-books into all the popular formats. The app also allows you to change the destination directory, select a cover, add an author name, and specify the book title.

Best ePUB to MOBI Converter: File Converter for Android

• Easy to share files with others.
• Converts files to MOBI, AZW3, and PDF.
• Optimizes for different e-book readers.

• Must be online to convert files.
• Upload files limited to 100 MB.
• Cannot convert password-protected files.

When you want a choice between converting ePUB files online or in an app, check out File Converter. With File Converter, you get an Android app and an online converter, both of which are easy to use and capable of converting most file types beyond just e-books.

Fastest ePUB Converter: To ePUB

• Batch conversions.
• Easy to use.
• Converts popular e-book formats.

• Can't edit metadata.
• Converted files are held for an hour.

To ePUB works the same as most of the web apps: Upload your e-book and To ePUB does the hard work. You can convert multiple files simultaneously and download each as soon as it's finished converting, which should only take a few seconds.

Edit E-book Metadata: Online-Convert

• Supports all e-book formats.
• Edit metadata.
• Android app available.

• Limited file size for uploads.
• Slow conversion speed.
• Website is confusing to navigate.

Many online e-book converters are extremely simple, but they don't give you the option to edit the metadata. Online-Convert is different. It has settings to change the metadata, set the font size, and add a border. The trade-off is that the site can be tough to navigate.

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