The 9 Best ePUB Converters

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.

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Manage an E-book Library: Calibre

What We Like

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

What We Don't Like

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.

Download Calibre

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Convert Files From Your Desktop: ePUBee ePUB Converter

What We Like

Desktop app available for Windows and Mac.
Converts files in batches.
Easy to use.

What We Don't Like

Must remove DRM to convert files.
Only converts files to EPUB, MOBI, PDF, and TXT formats.
Cannot customize output.

When you’re looking for a fast and easy way to convert your e-books into different formats, ePUBee gets the job done quickly. You won’t find any extras with ePUBee, only the ability to convert files. You can use the ePUBee Online Converter or download the desktop app for Windows and Mac to convert books without an internet connection.

Download ePUBee eBook Converter

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Convert E-books Online: ePUB Converter

What We Like

Converts most e-book formats.
Automatically adjusts pages to fit e-readers.
Can batch convert files.

What We Don't Like

Cannot add metadata.
Converters are on separate web pages.
Format of PDF files is not always retained.

ePUB Converter accepts most e-book formats and is easy to use. Just select the converter you want and upload your file to convert ePUB files to different e-book formats.

Visit ePUB Converter

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Convert Anything: Convertio

What We Like

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

What We Don't Like

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. Just upload your file, choose an e-book format, and you’re done. There's even a Convertio extension for Google Chrome.

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Best ePUB to PDF Converter: Zamzar

What We Like

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

What We Don't Like

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

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

If you need any 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.

Visit Zamzar

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Convert E-books on Android: Ebook Converter for Android

What We Like

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

What We Don't Like

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.

Download Ebook Converter for Android

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Best ePUB to MOBI Converter: File Converter for Android

What We Like

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

What We Don't Like

Must be online to convert files.
Upload files limited to 100MB.
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.

Download File Converter for Android

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Fastest ePUB Converter: To ePUB

What We Like

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

What We Don't Like

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

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

Visit To ePUB

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Edit E-book Metadata: Online-Convert

What We Like

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

What We Don't Like

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 even add a border. The trade-off is that the site can be tough to navigate.

Visit Online-Convert