Convert FB2 to AZW3 in bulk.
Large FB2 files are supported.

You can convert FB2 Learn more about FB2 files to


How to convert FB2 to AZW3?

You can convert FB2 to AZW3 with MConverter in three easy steps:
  1. Choose FB2 files from your device
    At the top of this page, drag and drop your FB2's.
    You can also click to select FB2 files using your operating system's file picker.
    Another method is to press the keyboard shortcut Ctrl+V (⌘+V on Mac) to paste an FB2 file you have copied to clipboard.
    Converting a folder with FB2 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

Extension fb2
Category E-book file formats
Developed by Dmitry Gribov
Mime type application/x-fictionbook+xml


FB2 is short for the FictionBook 2 format for e-books, created by the Russian Dmitry Gribov. It is XML-based, meaning it describes the structure of the book or document, instead of its styles and appearance. This file format is completely DRM-free. It also has support for some inline formatting.
Extension azw3
Category E-book file formats
Developed by Amazon
Mime type application/


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 FB2 to AZW3

Can I convert FB2 to AZW3 in bulk?

Yes, MConverter supports batch converting of multiple FB2's to AZW3's simultaneously. You can even drag and drop folders containing FB2's to convert to AZW3.
Pasting FB2 files and folders copied in the clipboard also works: use Ctrl+V.

Can I convert an FB2 file to AZW3, if its size is 1 GB?

Yes, with MConverter Premium you can convert big FB2's, up to 1 gigabyte each.
The free version lets you convert files up to 100 MB. If you need to convert FB2 files over 100 megabytes, try MConverter Premium.

Is converting FB2's to AZW3 safe with MConverter?

Yes, we encrypt your connection using industry standards. Plus, your FB2 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 FB2's and other converted files immediately after finishing the conversion by clicking the bin icon.
Join others who have trusted us to convert over 5,264,455 files so far.

How long does it take to convert FB2 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).

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