Convert AZW3 to EPUB in your browser, for DRM-free Kindle files you want to read on a device or app that has no Kindle support. AZW3, also called KF8, is Amazon’s newer Kindle format, and an AZW3 file can also carry an older MOBI copy of the same book inside it. This converter reads that copy and rebuilds it as a standard EPUB 3 with chapters, images, title and author, on your own device, with nothing uploaded. The catch, stated up front: an AZW3 that holds only the KF8 version can’t be converted yet, and a book bought from the Kindle store is normally DRM-protected and refused. Older .azw files are accepted too.
How it works
- Drop the .azw3 file. Its card shows the title, author and chapter count, or the reason the file can’t be read.
- Look over the chapter list, which is split at the book’s page breaks, and untick anything you don’t need. The Output is already set to EPUB.
- Press Convert & download. The .epub saves straight away, and the result line notes that it was built from the file’s legacy MOBI text.
Questions
- What is the difference between AZW3 and MOBI?
- Both are Kindle formats inside the same PalmDB container. MOBI is the older Mobipocket layout; AZW3, or KF8, is Amazon’s newer one with richer formatting. A combined file holds both versions of the book, and this tool reads the MOBI version, so the EPUB follows the older rendition’s text and images rather than the KF8 layout.
- Can I convert a Kindle book I bought from Amazon?
- Not if it is DRM-protected, which store purchases normally are. The tool detects the encryption and refuses the file by name; it never decrypts anything. DRM-free AZW3 files convert as long as they contain the older MOBI text part; files with only the KF8 part are not supported yet.
- Does my file get uploaded?
- No. The models and all processing run inside your browser on your own device. You can verify this yourself: open your browser’s DevTools, watch the Network tab, and process a file: there are no uploads. After the first visit most tools also work fully offline.
- Does this work on books with DRM?
- No. DRM-protected books (most storefront purchases) are encrypted, and this tool does not and will not break that encryption. DRM-free books (self-published, converted, or from DRM-free stores) convert fine.
- Will the PDF look exactly like my e-reader?
- EPUB is reflowable, with no fixed pages, so the PDF is one honest pagination of the book at a readable size: chapters, paragraphs and images in order. Complex fixed layouts may differ from a particular reader’s rendering.