EPUB to AZW3 Converter

Convert EPUB books into AZW3 (KF8), the Kindle format that keeps fonts, styling and images. Best for Paperwhite, Oasis, Scribe and Fire when you copy books over USB. Need a file for a very old Kindle? Use EPUB to MOBI.

Drop your EPUB books here

EPUB (FB2 and MOBI work too) - up to 10 books, 100 MB each.

How to convert EPUB to AZW3

  1. Add your EPUB. Drop one or more books - covers and titles appear straight away.
  2. Pick your Kindle. Choose your model so the layout fits its screen.
  3. Copy it over USB. Download the AZW3 and drop it into the Kindle's documents folder.

AZW3 or MOBI?

AZW3 (KF8) supports modern styling - embedded fonts, better tables and images - so books look closer to the original EPUB. Every Kindle from 2012 on reads it.

MOBI is the older format for first-generation models. Choose EPUB to MOBI only if your Kindle cannot open AZW3.

Features

Tuned per Kindle

Pick your model and the layout fits its screen.

Chapters and TOC

Navigation carried over, optional contents at the start.

Cover preview

See each cover and title before converting.

Fix the details

Change title, author, language or cover.

Batch

Up to 10 books at once, zipped for you.

Private

No account, files deleted after a few hours.

Frequently asked questions

Yes. No account, no watermark, up to 10 books at once.

Yes. Set Pictures to E-ink (grayscale, 600 px) or Smallest (480 px). Old Kindles show grayscale anyway, so the book looks the same but opens faster and takes less space.

All Kindles from the Paperwhite (2012) onward, plus Oasis, Scribe, Basic and Fire tablets.

If you email books, yes - Send to Kindle accepts EPUB and converts it. AZW3 is for copying books over USB, which keeps your own formatting and works offline.

No. Books with store copy protection cannot be converted, and the page tells you before uploading. DRM-free books, your own files and public-domain titles all work.

Yes, with AZW3 to EPUB.

Your book is converted on our server and deleted automatically after a few hours. The cover and title preview is read in your browser before anything is uploaded.

Guides & Tutorials

All 14 guides
Comparison PNG vs JPG: Which Image Format Should You Actually Use? Read the guide Optimization How to Reduce Image File Size Without Losing Quality Read the guide Guide Complete ICO File Guide: Understanding, Opening & Converting Icon Files Read the guide