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EPUB to AZW3 converter

Convert EPUB to AZW3 online from any device with a free converter.

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About eBook converter

Convert EPUB to AZW3 files online with our free eBook converter. Convert EPUB files fast, no matter if you're using Windows 10, a Mac, or an iPhone.

Popular eBook formats include EPUB, MOBI, and DJVU. EPUB is widely used for its flexibility and reflowable text, DJVU stores scanned documents, and MOBI is common on older Kindle devices. Top rated apps like Apple Books and Google Play Books allow reading on smartphones and tablets.

To change EPUB to AZW3, simply upload your eBook file, choose AZW3 as the output, and click Convert. Once done, your file will be ready to download instantly.

Check our video
EPUB

Digital E-Book File Format

EPUB (Open eBook File) is a widely used open-standard file format for digital books and publications, designed to be flexible and accessible across various devices. It is supported by most e-readers, such as Kindle, Apple Books, and Adobe Digital Editions, as well as software tools like Calibre for creating and managing EPUB files. The format is based on HTML, CSS, and XML, allowing for reflowable content, embedded fonts, multimedia support, and advanced features like annotations, bookmarks, and accessibility options for visually impaired readers.

AZW3

Kindle eBook format

AZW3 is an e-book file format developed by Amazon for use on Kindle devices and apps. It is supported by Kindle devices, the Kindle app, and tools like Calibre for conversion and management. The format is based on the MOBI structure but includes advanced features like enhanced typography, embedded fonts, and support for HTML5 and CSS3 for richer formatting and interactivity.

Add the conversion API to your app

  • Convert over 200 file formats — including PDF, Word, Excel, HTML, images, and many more
  • Load files from disk, URLs, FTP servers, or cloud storage (such as Amazon S3 or Azure)
  • Customize output settings — rotate and reorder pages, add comments, or apply watermarks
How it works

How to convert EPUB to AZW3

Step 1
Click inside the file drop area to upload EPUB file or drag & drop EPUB file.
Step 2
Click on Convert button. Your EPUB files will be uploaded and converted to AZW3 result format.
Step 3
Download link of result files will be available instantly after conversion.
Step 4
You can also send a link to the AZW3 file to your email address.
FAQ

Questions & Answers

Other Supported Conversions

You can also convert EPUB into many other file formats. Please see the complete list below.

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