Convert AZW3 to EPUB.
Convert Kindle AZW3 books to open EPUB. Reflowable text, chapters and metadata kept intact.
AZW3 to EPUB: leave the Kindle ecosystem
AZW3 (also called KF8) is Amazon's newer Kindle book format. EPUB is the open standard that everything else reads — Kobo, Nook, Apple Books, Google Play Books and the reading apps on your phone. Converting AZW3 to EPUB lets a book travel out of the Kindle world and open on whatever you actually read on.
What carries over
Run through Calibre, the conversion keeps the reflowable text, chapter structure, table of contents and metadata — so the book resizes and rewraps comfortably on any screen, just as an ebook should.
A note on DRM
This converts DRM-free AZW3 files only — your own documents, public-domain titles, or books without copy protection. It doesn't unlock the DRM on a purchased Kindle book.
How it works
- 01
Upload your AZW3
Drop a file or pick one from your device. Private by default.
- 02
Convert with Calibre
AZW3 becomes EPUB using Calibre, the best-in-class open-source ebook engine — no paid API in the loop.
- 03
Download
Grab your EPUB.
Chapters, formatting & metadata preserved
Private uploads, auto-deleted after 1 hour
No watermark, no signup to try
Handles large books
Free and open-source engine (Calibre)
AZW3 to EPUB
This re-flows the book into EPUB, carrying chapters, the table of contents and images. Reflowable ebook formats adapt to the reader's screen and font size. Heavy fixed layouts (comics, textbooks) convert less cleanly.
Common questions
Is it free?+
Yes — convert AZW3 to EPUB free. No signup, no watermark, no daily cap.
Is my book private?+
Uploads go to a private bucket, are converted, and auto-delete after 1 hour. Files never touch a third-party converter.
Will formatting hold up?+
We use Calibre, the standard open-source ebook toolkit. Chapters, text flow and metadata are preserved.
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