What is an AZW3 file?

The AZW3 format in brief: what it is, what it is used for, and how to convert it.

AZW3: conversion steps

  1. Upload your AZW3 file to start.
  2. Convert AZW3 to EPUB.
  3. Download the AZW3 file.

About AZW3 files

Amazon's Kindle Format 8 ebook format

AZW3, also called KF8, is Amazon's Kindle Format 8, introduced in 2011 with HTML5 and CSS3 formatting.

Kindle ebooks with a richer layout than MOBI; Kindle devices and Calibre read it.

AZW3: what conversion changes

Converting AZW3 reflows layout.

AZW3: settings to change

Before you convert AZW3 files, you can adjust: Title, Author, Language, Page size, Base font size, and Generate table of contents.

Limits of the AZW3 format

Books bought from Amazon usually carry DRM, and DRM-protected files cannot be converted.

Common questions about AZW3

Why won't my Kobo, phone or computer open my AZW3 ebook? Kindle Format 8 is Amazon's proprietary layout, locked to their own readers — converting to EPUB frees the book for every other device.

Why convert an ebook to AZW3? To load it onto a Kindle in Amazon’s native format, with better typography support than old MOBI.

Convert AZW3 files

Guides and tools for AZW3