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Home / Blog / Free Methods to Convert PDF to Kindle

Free Methods to Convert PDF to Kindle

By Susy | Follow twitter | Updated on August 1, 2022 | Deutsch
Information technology and digital devices have changed the way people read books today.  E-readers like Kindle are widely used around the world because of the popularity of eBooks. Kindle devices support eBooks in Kindle File Format as well as PDF books but don't allow changing fonts in a PDF. Therefore, many Kindle users who have PDF books may wish to convert PDF to Kindle format so they can adjust the font size to enhance their reading experience.

Converting PDF from/to another format is easy with a converter like SwifDoo PDF. In terms of converting a file from PDF to Kindle format, we will cover several free methods in this post.

Understanding PDF and Kindle

Before exploring how to convert PDF to Kindle format, it’s better to understand the concepts of the two items first.

PDF is a digital document format designed to fix the layout and formatting in the original file so that the file can be shared and viewed without discrepancies across different devices or software. You can read a PDF and zoom in or zoom out on the pages on Kindle, but can not make alterations to the file. 

Kindle is a line of e-readers developed by Amazon, which use the proprietary AZW or AZW3 and KFX file formats, formerly Mobi to store ebooks and can read PDF and other types of files. It allows you to add notes and highlight text on a Kindle eBook. The newest Kindle e-readers include the Kindle Paperwhite and the Kindle Paperwhite Signature.

Statista’ s primary research forecasts that eBook users are expected to grow to 1.18 billion by 2026. This will lead to more demand for converting PDF files to Kindle ebooks as Amazon is a key player in the eBook devices market.  

Convert PDF to Kindle with Calibre

When it comes to converting eBooks, Calibre stands out among a great many converters. This is an eBook reading and management software suite that can convert your files from PDF to Kindle MOBI or AZW3 format in batch on Windows, Mac as well as Linux operating systems. You can also add and convert books in several different formats such as EPUB, PDF, and RTF to files in another format at once.

What makes the PDF to Kindle conversion app top of the list is it's open-source and completely free to use. Here is how it works.

Step 1: Launch the software and click Add books on the top left to import your PDF files;

Step 2: Hold the Ctrl key to select the files you need to convert and tap the Convert books drop-down menu to choose Bulk convert or Convert individually;


Step 3: In the pop-up window, select the output format as MOBI, AZW3, or EPUB;


Step 4: Press the OK button.

When the conversion is finished, click “Save to disk” to save your converted Kindle ebooks to your computer, and you can choose to save them in a single folder. Use USB or Send to Kindle app to send the ebooks to your Kindle devices.

Convert PDF to Kindle with Online-convert.com

To avoid the hassle of download and registration, it’s recommended to use the online file conversion tool, online-convert.com for converting a PDF to a Kindle eBook. The web tool is a free and multi-purpose converter that can convert a variety of types of files such as ebooks, PDFs, audios, videos, images, and more. Check the 3-step guide to convert your PDF files to Kindle ebooks.

Step 1: Access the online converter website and choose Ebook converter on the home page;


Step 2: Scroll down the Online ebook converter page and select whether to convert PDF to AZW, MOBI, or other formats;

Step 3: Click Choose File to upload your PDF file, and hit Start.  


Before the conversion from PDF to Kindle format, you can change the settings for converted results, such as font size, book title and author, and some other options. For better compatibility of your e-books, remember to choose your target e-book reader on the converter page. If needed, you can use the converter to convert Kindle to PDF or other formats.

Note: The PDF to Kindle converter enables you to process 3 tasks per day. For more files, you need to create a premium account.

Convert PDF to Kindle via Send to Kindle App or E-Mail

Send to Kindle for PC and Mac

Through the Send to Kindle apps available on Windows and Mac PCs, you can send PDF documents to your Kindle e-book reader and free reading app on your phone, and convert them to Kindle ebooks at the same time. The apps are free and easy to use, and all you need is download them from Amazon and log into your account. Take a look at how to transfer PDF files to Kindle and convert PDF to Kindle format.

Step 1: Open the downloaded Send to Kindle app on your Windows or Mac PC, and click the middle area to import your PDF files;


Step 2: Choose the Kindle reader, iOS, or Android device that you want to send the PDFs to;


Step 3: Click Options on the top right corner and tick the Convert PDF documents to Kindle format option;


Step 4: Hit OK and Send.  

Once the Send to Kindle app finishes formatting and delivering the PDF documents, you can open your Kindle reader or reading app on your phone to synchronize the ebooks. During the whole process, please make sure your devices are connected to the network.  

Send to Kindle by E-mail

After you registered for Amazon Kindle, the Kindle Personal Documents service will provide you with a Send-to-Kindle e-mail address, with which you can email PDF and other types of documents to your Kindle devices and convert PDF to Kindle AZW format.  

Step 1: Go to Personal Document Settings at Preferences page of Content & Devices via a browser and check your Send-to-Kindle email address;


Step 2: Start an email, add the email address as the recipient, and type convert in the subject line;

Step 3: Attach the PDF file you need to send to your Kindle or reading app, and send the email.

You only can send documents to your Kindle devices and reading apps with an approved email account, which is your registered email by default. If you wish to send with another email address, please add the address to the “Approved Personal Document E-mail List” under the “Personal Document Settings” section to authorize it.

Note: This method may take several minutes, a few days, or a longer time to convert and deliver your PDF documents, so it’s less recommended in the post.

Final Thoughts

Any of the mentioned tools and methods lets you convert PDF to Kindle format effortlessly. Just choose your preferred one. If you have more needs for documents conversion such as converting PDF to Word, Excel, PPT, HTML, CAD, and vice versa, SwifDoo PDF is your best choice.

The productivity software market size is so big, and investing in a productivity tool like SwifDoo PDF will contribute a lot to your work.

Common FAQ about Free Methods to Convert PDF to Kindle

Q:How can I convert a PDF to a Kindle file on iPad and iPhone?

The Ebook Converter from App Store enables you to convert files from PDF to Kindle format on iPad and iPhone. After installing it, follow the guide below.

Step 1: Locate and select the PDF file you want to convert;

Step 2: Choose whether to convert PDF to Kindle MOBI, AZW3, or other Kindle-supported ebook format;

Step 3: Start converting the files and open them with your Kindle reader or reading app.

Q:How can I convert PDF to Kindle format on Android?

Converting ebooks is not a problem with the Ebook converter app on your Android. Find out how to convert your PDF to a Kindle ebook.

Step 1: Click plus icon to add a PDF file to the app;

Step 2: Tap CONVERTING to select output format;

Step 3: Hit CONVERT.



Susy has worked with PDF tools for more than 5 years. During the past time, PDF software is of huge assistance in increasing her productivity. She joined SwifDoo PDF one year ago and works as an editor now. Based on a lot of research and tests, Susy can offer users professional and practical solutions to PDF issues.

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