Free Online AZW3 to EPUB Converter

Convert AZW3 to EPUB online for free.

Drop AZW3 files here

or click anywhere in this box to choose files

Up to 50 MB per file. Sign up free to convert files up to 100 MB.

Selected files

File name	Size	Convert to

Convert all to:

Conversion complete

File name	File size	Download

Convert More Files Download All (ZIP)

AZW3 to EPUB: off Kindle, onto everything else

This unpacks the KF8 container back into XHTML, CSS and an OPF manifest, the open structure Kobo, Apple Books, Google Play Books and every open reader expect. It works because AZW3 was derived from EPUB in the first place, so the mapping is close. It only works on files without DRM: a title still carrying Amazon’s encryption cannot be read by any converter.

Convert to move your own books to a non-Kindle reader, or to edit them in Calibre or Sigil. If the conversion fails outright rather than producing an odd result, DRM is the usual reason.

AZW3 vs EPUB: Side-by-side

Technical comparison of the two formats, useful for deciding which to use, or for confirming what changes during conversion.

Property	AZW3	EPUB
Full name	Kindle Format 8	Electronic Publication
Year introduced	2011	2007
Developer / standard body	Amazon	W3C (formerly IDPF)
MIME type	application/vnd.amazon.ebook	application/epub+zip
File extension	.azw3	.epub
Compression	Variable	ZIP-compressed XHTML + CSS
Color / data depth	N/A	N/A
Max dimensions / size	Software-limited	Software-limited
Transparency	No	No
Animation	No	No
Standard / specification	Amazon	W3C EPUB 3.3 / ISO/IEC 23736
Best for	Modern Kindle devices, enhanced typography and layout	Apple Books, Kobo, Nook, Google Play Books, reflowable text

Frequently asked questions

Can I convert AZW3 books to EPUB for my Kindle or Kobo?

Yes. Upload your AZW3 ebook and it converts to EPUB with chapter structure, cover art, and formatting preserved. Load the EPUB onto your Kindle, Kobo, Nook, or any eReader that supports the format.

How to convert AZW3 to EPUB without losing the table of contents

Chapter navigation, the cover image, and text formatting all carry over during conversion. The EPUB has proper chapter links so you can jump between sections on your eReader just like the original AZW3.

Can I convert multiple AZW3 ebooks to EPUB at once?

Yes. Upload a batch of AZW3 files and they are all converted to EPUB. Each book downloads separately or as a ZIP, so you can convert an entire library in one session.

Does the text still reflow after converting to EPUB?

Yes. EPUB keeps text reflowable, so it adapts to any screen size and font setting on your eReader rather than being locked to a fixed page like a PDF.

Which reader is EPUB for?

EPUB is a reflowable ebook format best for Kobo, Apple Books, and Nook. Convert your AZW3 to EPUB when your eReader or app opens EPUB more reliably, so the whole library works on one device.

How do I open AZW3 files?

On Windows: Calibre, or a Kindle device. On a Mac: Calibre, or Kindle for Mac. Kindle's format. DRM-protected purchases will not open outside Kindle apps, and no converter can change that.