4 Methods to Remove DRM from Kindle KFX eBooks in 2019 [Video]

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As an eBook lover, you must be very familiar with Kindle KFX format which has been launched in 2015 but applied to almost all Kindle eBooks in the recent years. Nowadays, no matter the books downloaded via Kindle desktop application(version higher than 1.17) or Kindle e-ink device (firmware higher than 5.6) are all in Kindle KFX format. Just as other Kindle formats, Kindle books in KFX format are protected by DRM as well and only can be read in limited Kindle related applications and devices. How to remove KFX DRM? I will share 4 different methods to remove Kindle KFX DRM, including remove DRM from Kindle KFX Books downloaded via Kindle for PC/MAC, Kindle e-Ink devices or even Kindle Cloud Reader.

remove kindle kfx drm

Why Choose Epubor Ultimate?

Epubor Ultimate -- the first eBook tool on the market can remove Kindle KFX DRM quickly and losslessly. Below are the main reasons that this software is highly recommended.

Reason 1. Smoothly remove DRM from the main stream ebook vendors, including Amazon Kindle, kobo, Google Play etc.

Reason 2. Easily convert eBook to any other formats.

Reason 3. The most important reason is Epubor developers are continuously updating Epubor Ultimate to catch up with the latest DRM scheme.

Download Epubor Ultimate for free:

Method 1. Kindle Books Downloaded via Kindle for PC/MAC (Video)

Step 1. Download Kindle KFX Books via Kindle for PC/MAC

When you use Kindle for PC/Mac version 1.19 or even higher to download the Kindle eBooks, there are great opportunities that the downloaded eBooks are in Kindle KFX format.


From 2019, the Kindle has released a new Kindle KFX DRM. Your Kindle eBooks will be encrypted with this new Kindle KFX DRM if you download Kindle eBooks via Kindle for PC/MAC version 1.25 or higher, or Kindle device with firmware higher than 5.10.2. If you happen to upgrade your Kindle for PC/MAC to the version 1.25 or higher, please downgrade the Kindle for PC/Mac to older version automatically for removing Kindle KFX DRM.

Install and register your Kindle for PC/Mac. Then you can click the book title at your Kindle library to wait the Kindle books to be downloaded. Different from the old Kindle format which is a single file and stored directly under “My Kindle content” folder, Kindle KFX eBook is not one file, but a series of files stored at a subfolder under “My Kindle content” folder.

Kindle kfx ebook files

Kindle ebook folder

To be mentioned, the Kindle KFX eBooks you downloaded via Kindle for PC/MAC are not with the extension .kfx, but .azw as the above picture. Although, the Kindle books with the extension .azw, it is the KFX format which can be told by the file structure and content.

Step 2. Launch Epubor Ultimate to remove Kindle KFX DRM

Install and launch Epubor Ultimate.
Download Epubor Ultimate for Free Trial


Then click on "Kindle" tab at the left column and the downloaded Kindle eBooks will be detected and displayed automatically at the left column under Kindle tab. To remove Kindle KFX DRM, drag the Kindle books from the left to the right column. The DRM will be stripped automatically and you can see "Decrypted" at the end of each book.

remove Kindle KFX DRM

To find the decrypted Kindle KFX eBooks, you directly click on “Decrypted” or right click the book at the right column to explore decrypted file as the below picture or click on "Output folder" icon at the bottom right.

explore decrypted books

Step 3. Convert Kindle KFX to PDF/Epub/AZW3/Mobi

Since the Kindle KFX eBooks are using special render techinque, even the DRM-free Kindle KFX eBooks only can be read at the Kindle for PC/Mac or Kindle e-ink devices. Many people complain that they can not read the DRM-FREE Kindle KFX eBooks at Calibre that's because Calibre does not support Kindle KFX eBooks. Also, there is no other reader on the market support Kindle kfx fromat. Converting Kindle KFX to PDF/Epub/AZW3/Mobi is a must-be step for reading Kindle kfx ebooks at any eBook reader apps or eReader.

When your books have been decrypted, please find the convert button at the central buttom and select the output format at the drop down list and then click on "Convert to XX”.

conversion button

When the conversion has finished, you will see "Succeeded". Just click on "Succeeded", you can open the folder stored the converted eBooks.

conversion succeeded

Please watch the following video tutorial to learn the latest solution to remove DRM from Kindle KFX eBooks.

Method 2. Remove DRM from Kindle KFX eBooks Downloaded via Kindle e-Ink Devices

Step 1. Download Kind KFX eBooks via Kindle e-Ink device

If you happen to have a Kindle device, you can directly tap the book title at the library to get your Kindle eBooks downloaded. If your Kindle firmware is higher than 5.6, the eBooks you downloaded possibly in Kindle KFX format.

For Kindle KFX eBooks downloaded via Kindle firmware 5.10.2 have been encrypted with a new DRM scheme, you may be failed to remove this Kind of Kindle KFX DRM. Please follow Kindle firmware has been updated to 5.10.2 to get your Kindle KFX DRM removed. If your Kindle firmware is still not updated to 5.10.2, please stop Kindle update NOW!

Like the Kindle KFX books downloaded via Kindle for PC/Mac, the Kindle KFX eBook downloaded via Kindle e-ink device is also not a single file but consisted of a file with extension .kfx and a series of files stored at a subfolder under Documents folder at your Kindle device.

Kindle kfx ebooks

Step 2. Remove Kindle KFX DRM with Epubor Ultimate

Plug in your Kindle e-ink device to your computer with USB, and then run Epubor Ultimate. The Epubor Ultimate will automatically detect your Kindle e-ink device and show all downloaded books at the left column under your eReader tab. Just drag the books from the left to the right column and the books are decrypted automatically.

remove DRM from Kindle KFX

Step 3. Convert Kindle KFX to Epub/PDF/Mobi/azw3

For converting the KFX to Epub/PDF/MOBI/AZW3, just follow the guide in step 3 at above part.

Method 3. Downloaded Kindle Books from Kindle Cloud Reader

Besides downloading kindle books from Kindle desktop application or Kindle e-ink devices, you can even download Kindle books from Kindle Cloud Reader. What amazing, right? Below are detailed steps of downloading ebooks from Kindle Cloud Reader and exporting these ebooks to DRM free mobi file.

Step 1. Download Kindle Cloud Reader books

Before downloading Kindle Cloud Reader books, please ensure you are using the latest version of Google Chrome. Then visit read.amazon.com via Google Chrome web browser. Sign in with your Amazon account, you will see all your purchased Kindle books in your Kindle Cloud Reader library. If this is the first time you login to your Kindle Cloud Reader, there will pop up a window asking if you want to enable offline reading. Please click on "Enable Offline" button to enable this function.

kindle cloud reader enable offline

Right click the book cover and select "Download & Pin Book" to download Kindle Cloud Reader books.

Step 2. Export Kindle Cloud Reader books to DRM-Free ePub/AZW3/Mobi files

When the kindle Cloud Reader books have been downloaded, they will not in normal format but some unreadable files. To convert these files to DRM-FREE files, Epubor KCR Converter is highly recommended.


Download and install the KCR Converter. When you run it, the downloaded Kindle Cloud Reader books will display at the main interface. All downloaded books will be selected, and then click on "Convert to ..." to export all Kindle Cloud Reader books to DRM-free files.

convert kindle cloud reader to mobi

When the conversion finished, the folder storing the converted DRM-FREE files will pop up automatically.

Ultimate Method--Download &Transfer Kindle Books via USB and Remove Kindle DRM

Besides afore mentioned methods of downloading Kindle books, is there any other method to download Kindle books? Of course, here is another way to download your kindle books. You can download Kindle books via Kindle for Android or iOS, but there is no way to remove DRM from books downloaded via this method. Alternatively, you can download and transfer Kindle books via usb if you have any Kindle device registered with your Kindle account information. Below is the step-by-step guide.

Step 1. Amazon Books Download and transfer via usb

Open your web browser and go to Amazon official website. Then login to your Amazon account and go to Manage Your Content and Devices.

All your books will be listed under your content tab as below.

manage your content and devices

Click on "Action" button before the book title and you can see all actions you can do. Just select "Download & transfer via USB" and a new window will pop up to show your registered Kindle devices.

download actions

Just choose the Kindle eink device and then click on "Download" button to start the downloading process.

download and transfer via usb

A prompted message will remind you of downloading Kindle content to your computer via your media library.

download kindle content

Once finished, you will see the book has been downloaded to your computer.

Step 2. Remove DRM from Kindle books with Epubor Ultimate

An interesting thing about Kindle books downloaded from Amazon website directly is that they are DRM free. Thus, there is no need to remove Kindle DRM.

In case you have books downloaded from Amazon website directly protected by DRM, I will also show you how to remove DRM.

Download & run Epubor Ultimate.

Download the tool for free:

Plugin the Kindle device which you select as the target device for downloading Kindle books in step 1. Why need to plugin in the Kindle device? Because Epubor software have to detect your Kindle serial number for decrypting your Kindle books. This is the key step for removing Kindle DRM! Then drag & drop the Kindle books to the main interface and the books will be decrypted automatically. In there following picture, all three books are DRM-free kindle books. Actually, there is no need to remove DRM from these books.

remove kindle kfx drm

If you do not have your Kindle devices at your hand, you need to find your Kindle serial Number at first. If you don't know where you can find the Kindle Serial Number, you can read the full guide on How to Easily Find the Kindle Serial Number.

Just copy this information and run Epubpr Ultimate -->> User center-->>settings-->Kindle-->>input the Kindle serial Number and then click on "Ok".

Then add the Kindle books to Epubor Ultimate and the DRM will be removed successfully.

Note:input kindle serial number
To be mentioned that eBooks downloaded via Kindle media library( Amazon website directly) will be in AZW3 format. If you choose to download Kindle books in this way, you will avoid Kindle KFX format.

With the best Kindle KFX DRM Removal--Epubor Ultimate, you can get all your Kindle books decrypted and converted. If you think this article is helpful, please give us a thumb up. Of course you can also have a trial to remove KFX DRM Calibre because the new released De-drm plugin has already added this function. If you are a Calibre loyal user, this is also worth trying. But if you like simple things and hate any plugins installing, like me, Epubor Ultimate is a much better option. If you have any question about Kindle KFX format, please leave it at the comments.

Download Epubor Ultimate for free:

joined Epubor since 2017. She always wants to share everything related to ebook reading and improve your reading journey.

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