How to put .mobi Files onto the Kindle Fire HD

Before, I have written about how to put .mobi files onto the Kindle app. Now that I finally gave in and bought a Kindle Fire HD, I went to searching on how to put .mobi files (that aren’t purchased from Amazon/Kindle) onto the Kindle. I will also explain how to put .mobi files into the books section towards the end (because sometimes Kindle recognizes the files as part of the Docs section instead).

As that I have only ever had a Kindle Fire HD, I am not sure if these exact methods work for other types of Kindles. From what I can see, this also works for the Kindle Fire, but as for the other models I am uncertain.

Putting .mobi Files onto Kindle

There are two methods on how to do this:

First Method

You can put .mobi files onto your Kindle through the USB cord that comes in the box when purchasing your device.

  1. So retrieve that USB cord and stick that sucker in, connecting your Kindle to your computer.
  2. Once the Kindle is connected, you should get a prompt that lists a number of actions that you can perform with your device. Choose the option to view the device’s files. If you do not get a prompt to do so (it happens to me sometimes), then simply go to “My Computer” , click on your Kindle device and open its internal storage.
  3. From there, go to the folder labeled “Books” and copy&paste or drag&drop your .mobi files straight into that folder (do not put in them in other miscellaneous folders that are in the Books folder, just straight into the Books folder will do).
  4. And then enjoy! It might take a couple seconds for the books to appear on your Kindle, so don’t freak if it’s not instantaneous.

Second Method

Another way to put .mobi files onto your device would be to email it to your Kindle. I tried to email the .mobi files to myself , log in to my email with my Kindle and download the email attachment to open on the Kindle (as that’s how you do it with the Kindle app), but the .mobi attachment wouldn’t open up, to my disappointment. But do not fear, emailing it to your Kindle email works efficiently as well (although a little more difficult to set up and a little slower).

  1. First off, you cannot send emails to your Kindle email without verifying the email you are using (I’m guessing this is to prevent spam from emails you are unfamiliar with). The email that is connected to your Amazon account (for login) should already be on the approved list, so if you are planning to use that email to send the files onto your Kindle, you can skip to Step 5. If you want to use a different email, proceed to Step 2.
  2. Go onto the Amazon website. Find the link “Manage Your Kindle”; hover over the “Hi, [name] Your Account” and the drop down list should have this option.
  3. Once you are on the page, click “Personal Document Settings” on the left hand side. This will take you to your email settings, showing Kindle emails for all your Kindle devices or devices using a Kindle app (PC’s don’t have an email, so you won’t be seeing that here).
  4. Scroll down to the section labeled “Approved Personal Document E-mail List”. Click the “Add a new approved email address” and enter the email address you wish to add.
  5. Once you have been approved,  you can now use that address to send files to your Kindle email. Compose an email like how you would usually do and attach the .mobi file(s). Writing a subject or any content in the email won’t do anything, so don’t bother.
  6. From experience, it takes a couple minutes for the files to show up on the Cloud, so don’t be worried if you don’t see it right away. Once they show up, just press the icon to download the files and you are ready to go. If you wish to remove these files from the Cloud, I explain the process here.

How to be Certain that .mobi Files appear in the “Books” Section

If you’re like me and would go the extra mile and have all your .mobi books show up in its rightful place, there is a way. It can be very messy if some of your books show up in the Docs section and some show in the Books section. I’m not sure if there are other methods to solve this issue, but this is the one I used and it works for me.

  1. Download Calibre, a free program that can convert e-book files from one extension to another. I use this to switch the .epub files I find into .mobi format so I can read it on Kindle. There are also other formats you can convert to and from, but I personally don’t use them often (or at all). Coming from experience (and other users would agree), this program is safe and rather useful in many situations concerning e-books.
  2. Once you install Calibre, the program will ask you some questions pertaining to what kind of e-book devices you have, where do you want your Calibre library to be saved, etc. Answer accordingly.
  3. After you finish, drag and drop the .mobi files into the library.
  4. Select the book you wish to change. You can select multiple at once to convert if you so choose.
  5. Click the “Convert” button at the top, located third counting from the left.
  6. In the “Metadata” section, you should see “Output Format” with a drop down menu on the top right corner. Make sure “MOBI” is selected.
  7. On the left hand side, click “MOBI Output” and erase everything from the “Personal Doc tag” section.
  8. Click “OK” on the bottom right corner which will begin the conversion.
  9. Once you finish converting, navigate to your Calibre folder (the location you chose for your Calibre library to be).
  10. Find the newly converted .mobi file and drag&drop or copy&paste that file onto your Kindle (in the “Books” folder).

Changing Settings to Automatically Erase “Personal Doc tag” For You

If you are planning on coming back to this conversion process (let’s say you get new .mobi files everyday and are looking to convert frequently at multiple intervals), I would suggest changing your Calibre preferences so that you do not have to always erase the “Personal Doc tag” section every time you do this. In my instance, I had about fifty or more .mobi files to convert and erasing the tag all day long really got annoying after a while. It’s very simple:

  1. On the main screen, click the “Preferences” button, located furthest on the right at the top.
  2. Under the “Conversion” settings, click “Output Options”.
  3. Once in the Output Options, select “MOBI Output” and erase anything in the “Personal Doc tag” line.
    • Karina
    • July 21st, 2013

    Thank you so much!! This was very helpful.

  1. this app is awesome will convert your mobi files and send from your pc without all the hassle.

      • Adoreos
      • October 14th, 2013

      I am well aware of this feature. The problem is that if you’re putting a .mobi file and want it to be in the Books section you would have to do it the hard way.

    • Dawn Cavenee
    • October 25th, 2014

    This was so helpful! I don’t have a computer, just my Kindle Fire and my iPhone. The file an author sent me was not working on the Kindle and I REALLY didn’t want to use the phone (too small). These directions were easy and fast with better than I anticipated results. Thank you!

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