Convert EPUB to AZW3 in bulk.
Large EPUB files are supported.

You can convert EPUB Learn more about EPUB files to

Document/Office
docx Select DOCX as "to" format md Select MD as "to" format pdf Select PDF as "to" format rtf Select RTF as "to" format txt Select TXT as "to" format
E-book
azw3 Select AZW3 as "to" format fb2 Select FB2 as "to" format mobi Select MOBI as "to" format


How to convert EPUB to AZW3?

You can convert EPUB to AZW3 with MConverter in three easy steps:
  1. Choose EPUB files from your device
    At the top of this page, drag and drop your EPUBs.
    You can also click to select EPUB files using your operating system's file picker.
    Another method is to press the keyboard shortcut Ctrl+V (⌘+V on Mac) to paste an EPUB file you have copied to clipboard.
    Converting a folder with EPUB files to AZW3 is also supported: simply paste or drag and drop it.
  2. Click or tap on AZW3 from the list of target formats
    Alternatively, you can use the search field to quickly find the format you need, whether it's AZW3 or something else.
  3. Download your AZW3 files, after MConverter has finished processing them
    There's an option to automatically download the converted AZW3 files, so you don't have to press the download icon for each AZW3.
    On desktop platforms, you can download the AZW3 files to a different folder by clicking on SAVE TO...
    You may see a share icon as well. Use it to directly share the AZW3's with other apps.

About the formats

File extension .epub
Category E-book file formats
Developed by IDPF (International Digital Publishing Forum)
Mime type application/epub+zip

Format description

EPUB is one of the most widely used ebook formats. EPUB is an open, XML-based standard for distributing digital books and other publications.
Note: Nowadays, commercially sold ebooks often have DRM protection which prevents them from being opened or converted by third party software.
File extension .azw3
Category E-book file formats
Developed by Amazon
Mime type application/vnd.amazon.mobi8-ebook

Format description

Amazon's AZW3 e-book format is a successor to AZW for handling e-books on Kindle devices. Its newer features include support for more modern web standards, such as HTML5 and CSS3, allowing for better styling. Note that some AZW3 files are DRM-protected, meaning that MConverter is unable to process them.

Common questions about converting EPUB to AZW3

Can I convert EPUB to AZW3 in bulk?

Yes, MConverter supports batch converting of multiple EPUBs to AZW3's simultaneously. You can even drag and drop folders containing EPUBs to convert to AZW3.
Pasting EPUB files and folders copied in the clipboard also works: use Ctrl+V.

Can I convert an EPUB file to AZW3, if its size is 2 GB?

Yes, with MConverter Pro you can convert big EPUBs, up to 2 gigabytes each.
The free version lets you convert files up to 100 MB. If you need to convert EPUB files over 100 megabytes, try MConverter Pro. If your files aren’t over 1 GB, then you can use MConverter Plus instead, as it’s cheaper.

Is converting EPUBs to AZW3 safe with MConverter?

Yes, we encrypt your connection using industry standards. Plus, your EPUB files are only accessible by you. 4 hours after the conversion completes, they are automatically deleted from MConverter’s servers. You can also delete your EPUBs and other converted files immediately after finishing the conversion by clicking the bin icon.
Join thousands who have trusted us to convert over 15,083,602 files so far.

How long does it take to convert EPUB to AZW3?

For most e-books, the wait is normally a few minutes. However, MConverter also supports converting larger e-books, meaning that it could take a while (up to over an hour, for example).

EPUB to AZW3 Converter Rating

4.9
324 votes

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May 5, 2025
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Apr 18, 2025
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An exceptional product, with a fantastic, simple, immediate effective UX. A spatial combination of which format can be converted to which other format. A fast and flawless execution, with a very high quality of the output that maintains practically all the characteristics of the original document.
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What truly sets MConverter apart is its Swiss Army knife-type functionality. This tool can convert anything to anything with just a click of a button. It doesn't matter whether you're working with audio, video, documents, images, or any other file type - MConverter has got you covered.
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Aug 28, 2024
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Sep 22, 2021
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Although there are occasional errors, I was very impressed with the efforts of the developers to receive feedback from users and to improve the inconveniences quickly. I will be using it more often in the future.
Scott
Apr 28, 2022
I grab the webm I want to move to my phone and drag it over to the app, I click the type of file I want the webm converted to (mp4), it does it in 10 seconds. easiest 5/5 of my life.

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