EPUB to AZW3

Convert EPUB ebooks to AZW3 Kindle format online. Read your ebooks on modern Kindle devices with full formatting support.

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File is too large. The limit is 100 MB.

Supported: .epub (Max 100 MB)

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info About this tool
Convert standard EPUB ebooks to Amazon Kindle's AZW3 (KF8) format. Enjoy rich formatting, images, and advanced layouts on your modern Kindle device.

File size: AZW3 output is typically similar in size to the source EPUB.

Quality: AZW3 fully preserves EPUB's CSS formatting, making it the highest-fidelity Kindle format for richly styled ebooks.

format_list_numbered How to convert
  • 1
    Upload your EPUB file.
  • 2
    The engine packages it into Kindle-compatible AZW3.
  • 3
    Download your AZW3 file.
help FAQ

What is the difference between MOBI and AZW3?

AZW3 (KF8) is Amazon's newer format with better formatting support than MOBI. It works on Kindle devices released after 2011.

Can I read the result on my Kindle?

Yes, AZW3 files are natively supported by all modern Kindle devices and the Kindle app.
lightbulb Common use cases
  • check_circle Sideloading DRM-free EPUB books onto a Kindle Paperwhite or Oasis
  • check_circle Reading Project Gutenberg or open-access EPUB books on Kindle
  • check_circle Converting self-published EPUB files for Kindle testing before publishing
  • check_circle Building an AZW3 personal library from EPUB purchases
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