DRM Removal Tools for Amazon Kindle .AZW eBooks

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Amazon sells content for the Kindle in an ".azw" format, some of which has digital rights management (DRM) technology, here will introduce how to remove drm from azw files by using drm removal tools.

First, Authorize your copy of Kindle for PC and "Sync and check for new items".

Part 1: Remove DRM from azw files with Kindle DRM Removal.

Part 2: Remove DRM from azw files with Calibre Plugin.

Part 1: Remove DRM from azw files with Kindle DRM Removal.


Download Kindle Drm Removal


After you installed all the programs well, Remove drm from kindle azw now:

1Run Kindle Drm Removal to remove drm from kindle(azw, prc, mobi).

Our product can scan your default Kindle books folder automatically, you need not to add files manually. But if your Kindle books are not in the default "My Documents --- My Kindle Content" folder, you should customize the source folder in the "Setup" panel.

2Click "Remove DRM", then remove drm from azw files all the folder.

Open your newly created DRM-free kindle file with your favorite application (on whatever device you like).


1. Kindle DRM-protected books mainly come in following formats: .AZW, .KFX. And the DRM-free Kindle books are in MOBI format.

Part 2: Remove DRM from azw files with Calibre Plugin

Want to Remove DRM from eReader PDB, Nook, PDF, Kindle, AZW, Mobi etc.?

You can use Calibre Plugins(support Windows and Mac). Calibre is the best ebook converter, manager and transfer, with Plugins DRM Removal Tools, you can also remove DRM from PDB, ePUB, Bbeb, PDF AZW, Mobi etc.

How to remove DRM from Kindle.

First, learn more and download Calibre.

Second, Download plugin file: DeDRM_plugin.zip

This plugin is meant to decrypt Kindle AZW&Mobi . It is meant to function without having to install any dependencies... other than having Calibre installed, of course. It will still work if you have Python and PyCrypto already installed, but they aren't necessary.

Plugins Installation:

Go to Calibre's Preferences page. Do **NOT** select "Get plugins to enhance calibre" as this is reserved for "official" calibre plugins, instead select "Change calibre behavior".


Under "Advanced" click on the Plugins button.

calibre advanced plugins

Use the "Load plugin from file" button to select the plugin's zip file (K4MobiDeDRM_v03.5_plugin.zip) and click the 'Add' button. you're done.


Please note:  Adding the plugin was a success, Calibre will show the item in File Type plugins(as the images show). You can always click on the File-Type plugins to see if the plugin was added.

When you load any DRM protected kindle ebooks to Calibre, it's decrypted. This methods support Windows and Mac.




works for Epubor and writes articles for a collection of blogs such as ebookconverter.blogspot.com.

09/19/2011 09:50:31
Thank-you so much!! I dont know how much time I tried everything to figure this out!! Worked beautifully!!!!!!!!!!!
09/20/2011 06:27:46
Thank you SO much for the detailed, step-by-step instructions with screenshots! Other tutorial/instruction pages are sorely lacking; and for those of us who don't spend much time on computers, the details (and the screenshots) make all the difference!
10/13/2011 10:01:34
Just tried it today, but Alas, it doesnt work. Help
10/31/2011 23:17:42
Just tried it.
Installed the plugin according to the instructions.  Installed OK, restarted calibre, but still get the pop-up window just as before:
"This book is DRMed"
11/30/2011 16:51:16
There is a step missing from the Tutorial. You need to double click on the plugin in Caliber, then enter your Kindle Serial Number. I worked like a charm.
11/1/2011 18:13:42
Followup: Found my problem.
I had added the ebook file after installing calibre, but before installing the plugin.
In that case, installing the plugin will not re-read the ebook.
Solution:  Delete the file from calibre, then add it again.
11/25/2011 06:50:09
Installed the plugin according to the instructions.  Installed OK, restarted calibre, but still get the pop-up window just as before:
"This book is DRMed"
I deleted the book/s and added them again. Got decoding error and Books still says DRMed.
12/24/2011 13:20:12
I had the same problem until I followed the tip from Riad, posted on 11/30/2011.  Double click on the plug-in and enter your Kindle's serial number.  Then, delete the book from the calibre library and reload it.  It works great!
12/4/2011 11:51:19
Super - Worked - Win 7 64bit system.  Thank you.
12/28/2011 14:03:56
How do you find the Kindle serial# for a Kindle PC app?  
03/2/2021 00:19:37
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01/8/2012 08:53:21
works like a dream. many many thanks.
02/27/2021 16:20:42
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01/16/2012 06:23:10
It worked for me! I don't have a Kindle but I entered the serial number of my tablet (which has more than 10 characters) and it worked. I deleted the file, double clicked on the plug in, restarted calibre and done. THANKS!! :D
01/16/2012 15:39:33
Works now!  I have two Kindle and I used the serial # from the wrong one.  Thanks.
02/14/2012 08:49:50
You have to use the kindle serial number without commas or other signs between. That works!
02/15/2012 21:45:39
I enetered my serial number 5008 A0A0 05@@@ @@@@,,  and I still get the error decoding...  ugh
04/24/2012 05:59:18
You need to remove the spaces in between the letters and numbers in your serial number.  After I did this it worked fine for me.
02/18/2012 04:19:37
Thank you so much! I was so bummed i couldn't read them after purchasing them!!! This worked amazingly!!! :D
02/18/2012 14:45:44
Worked perfectly. Have kindle books on PC, wanted to convert to epub for my e-reader. Like last comments - amazing. Before installation, files imported into calibre were DRM locked AZM, after installation the same file imported as mobi, which I can now convert to epub. Perfect - thank you!!
02/28/2012 18:42:21

Success!  DRM removal fixed!  

As listed above, I am using the most current versions of Calibre 0.8.41 and the plugins 4.8. The issue was I installed the most current version of Kindle for PC, 1.9.1.  Apparently, after version 1.8.3, Kindle changed its format of it's DRM  breaking the current DRM removal tools.

The solution, Deactivate the currently installed version of Kindle for PC and uninstall it, download version 1.8.3 or eariler, install it, re-download all of my e-books. Also don't forget to uncheck automatic updating in Kindle for PC, Tools > Options > General or it will upgrade back to the newest version and break the DRM removal plugin again....  

I hope this is helpful to someone.....

02/29/2012 14:02:15
Where did you get Kindle for PC 1.8.3? Can't find it anywhere on line anymore...
03/24/2012 15:38:35
The calibre plugin works!! I use a calibre on debian linux. At first when I installed the plugin, I still saw the DRM locked sign pop up when I read in a book. Then I delete the books, restart the cablibre and readd those books. There is still the 'error code...' showing up when adding a book, but finally when I double click the added books, they can be opened.
04/4/2012 17:59:53
Thanks a lot! Very good tipp with the "old" version of Kindle. Works great. :-)
04/13/2012 21:07:45
Works great with both Kindle Fire and Kindle 3 Keyboard. :) Thanks for the help.
04/13/2012 21:15:42
We really appreciate your favour!
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05/29/2012 13:16:04
Thanks man for this righteous way of sticking it to the Man.  Now I can just send a caucasian to the author and abide on.
09/26/2012 08:59:11
I have installed your 'K4MobiDeDRM_v03.5_plugin.zip' in calibre. When I want to convert .azw to .mobi, it tells me that the book is DRMed. I thought this plug-n will remove the DRM or what am I doing wrong?
12/29/2012 00:33:26
Please download the books to your computer via Kindle for PC/Mac.
If you are directly copying them from your Kindle devico to your computer, please input the kindle's serial number in plugin's setting page.
11/1/2012 07:39:39
Followed instructions.  Checked plugin was present. Added eBooks copied from friends Kindle.  Calibre displays cover page, but other than that, dreaded DRM message appears.
Tried restarting - no success.  Want to add books to my chinese E-Reader
12/29/2012 00:25:36
Hi Peter,
I noticed that you are copying books from your friend's Kindle, then you should input the Kindle's serial number in the plugin's setting page.
01/9/2013 21:44:20

I can't get the plugin installed.  It says:

"calibre, version 0.9.12
ERROR: Unhandled exception: <b>ZipImportError</b>:can't find module calibre.gui2.preferences.toolbar

Traceback (most recent call last):
  File "site-packages\calibre\gui2\preferences\plugins.py", line 317, in add_plugin
  File "site-packages\calibre\gui2\preferences\plugins.py", line 406, in check_for_add_to_toolbars
  File "site.py", line 66, in load_module
ZipImportError: can't find module calibre.gui2.preferences.toolbar

What am I doing wrong??


01/9/2013 22:30:53
Hi Tom,
Just checked the plugin, it installed and worked well. Please confirm the plugin is downloaded completely.
01/10/2013 09:47:14
The above problem is fixed.  The issue had nothing to do with the plugin.  It was just a problem with my computer.
06/12/2013 03:28:08
Does it do azw3 files
06/12/2013 23:58:00

Hi, Mitch

Actually, as long as your Kindle books are synced / downloaded with Kindle for PC/Mac app, your Kindle books will come in AZW, which is also how you get your Kindle books decrypted.

If you copy Kindle books from your Kindle device or download from Amazon site, the Kindle books may not be decrypted.


06/13/2013 03:27:51
If I use kindle PC it may work
06/13/2013 18:43:23

Hi, Mitch

1. Register the Kindle for PC with your Amazon account, double-click each item to have them downloaded.
2. Get Kindle books from default Kindle content folder ("...\(My) Documents\My Kindle Content\...") and you will be able to decrypt them.


05/18/2014 16:01:25
I did this today, unsuccessfully at first. On the latest version of Kindle4pc the downloaded books appear in the kindle content as e.g. BOOK59QO74_EBOK.azw - and calibre does not recognise it, even if you change it to the true name.  However, when I downloaded the book directly from the Amazon manage your kindle site and renamed the extension as azw (it had downloaded as azw3) then calibre accepted it and stripped the drm, whereas when I had tried it with the extension azw3 just got the usual drm box not allowing.  Worked beautifully with an azw extension, came into calibre as a mobi.  Thought I would share this as it might help others.
06/8/2014 14:20:27
Thank you sooo much for posting this.  I was getting discouraged when it wasn't working.  I had tried entering my kindle serial number, reloading the book in calibre and opening and closing calibre to no avail.  I copied and changed the file to azw instead of azw3 and it finally worked! Thank you!
06/20/2014 09:43:17
Where do I fined the extension  to change from azw3 to azw on my manage kindle page
06/22/2014 15:54:00
Chris, you won't find the extension on the Amazon manage your kindle page.  From this page first you download the book, i.e. under Actions click on "download & transfer via USB"  This will bring it to the selected file on your pc.  You can then change the extension using rename to delete the 3.  Then bring it into Calibre through "Add Books".  It comes into Calibre as a mobi file with the DRM removed.  Hope this helps.
05/21/2014 09:45:27
Did you enter your kindle serial number into the plug-in after you imported the file to Calibre.  there are a couple of comments regarding this need.  It might help.
05/24/2014 14:19:21

Of my 140 books on Kindle for Mac, I've 110 converted.  I'm using 1.10.6 version of Kindle for Mac and trying to get to Calibre, convert, then to my new Nook Simple Touch.  My 1st Gen Nook finally passed on to the great electronic beyond after 5 years of faithful service.  Help!

I'm wondering if it is because I have the most reason version of Kfor Mac, like Jim and others referenced above with Kindle for PC.  But which version is the one before Amazon did its black magic and where can I find it?

Thank you!!

06/7/2014 07:55:08

I tried using the K4MobiDeDRM_v03.5_plugin.zip in calbri it works on .azw books but not .azw3 books any solutions the bug error is

'toc_threshold': 6,
'toc_title': None,
'unsmarten_punctuation': False,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: MOBI Input running
on C:\Users\admin\AppData\Local\Temp\calibre_6gmtqg\jjm5bg.azw
Found KF8 MOBI of type 'standalone'
Python function terminated unexpectedly
  Crashed (The Driven Trilogy) (Error Code: 1)
Traceback (most recent call last):
  File "site.py", line 132, in main
  File "site.py", line 109, in run_entry_point
  File "site-packages\calibre\utils\ipc\worker.py", line 195, in main
  File "site-packages\calibre\gui2\convert\gui_conversion.py", line 31, in gui_convert_override
  File "site-packages\calibre\gui2\convert\gui_conversion.py", line 25, in gui_convert
  File "site-packages\calibre\ebooks\conversion\plumber.py", line 1040, in run
  File "site-packages\calibre\customize\conversion.py", line 241, in __call__
  File "site-packages\calibre\ebooks\conversion\plugins\mobi_input.py", line 43, in convert
  File "site-packages\calibre\ebooks\mobi\reader\mobi8.py", line 72, in __call__
  File "site-packages\calibre\ebooks\mobi\reader\mobi6.py", line 147, in check_for_drm
calibre.ebooks.DRMError: Crashed (The Driven Trilogy)

08/9/2014 13:25:14

Re your comment in point one above about My Kindle Content folder. A few books appear but not all of them. How do I customize the source folder in the "Setup" panel, if that is the answer. Please tell this silver surfer who knows a very little about computers what I need to do in simple steps.

Thanking you in anticipation.


08/9/2014 13:25:16

Re your comment in point one above about My Kindle Content folder. A few books appear but not all of them. How do I customize the source folder in the "Setup" panel, if that is the answer. Please tell this silver surfer who knows a very little about computers what I need to do in simple steps.

Thanking you in anticipation.


08/9/2014 13:25:19

Re your comment in point one above about My Kindle Content folder. A few books appear but not all of them. How do I customize the source folder in the "Setup" panel, if that is the answer. Please tell this silver surfer who knows a very little about computers what I need to do in simple steps.

Thanking you in anticipation.


08/10/2014 20:11:54
If you need to customize the "My Kindle Content" folder, you need to do it in Kindle for PC --> Preferences.
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04/6/2015 21:55:38
This plugin in no longer available, at least at the file specifi
04/8/2015 20:07:08


The plugin can be downloaded without any problem from our website.

02/26/2016 15:32:43
Glen - thanks for tip to remove the 3 from file.  I was about to give up until I did this. it worked great
11/26/2016 12:38:25

This worked great for me...eventually.  I used a Kindle for PC to get my digital books.  My issue was I added a book to try and convert before I got the proper plugins so when I would try to convert it from Kindle format to EPUB it would still give me the error.  TRICK IS TO INSTALL PLUGINS FIRST AND THEN ADD BOOKs. I deleted the book I added before I downloaded the plugins and re-added it after the plugins and it worked perfectly!

Thanks for the tip billp!

11/15/2017 15:37:27
Good work.
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08/22/2018 10:13:07
It works great for me.
03/28/2021 23:58:14
plugin will not load SyntaxError
03/29/2021 09:29:28
Thank you for asking. To solve this problem, please follow this guide: https://www.epubor.com/solutions-to-calibre-dedrm-plugin-not-working.html
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