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EPUB is one of the most widely used e-book formats. However, it does not work on Kindle devices. Instead, Amazon uses its proprietary AZW3 or MOBI formats. Because the platform is the largest e-book retailer in the world, you’ll probably want to have an AZW3 copy of your publication. This will allow you to sell your book on Amazon or ship it directly to anyone who has a Kindle. This guide will walk you through converting your EPUB document to AZW3 to expand your reach.

How to Convert EPUB to Kindle on PC
When looking for a program that will convert your EPUB ebook to AZW3, you will need to find a solid one. E-books are typically large documents and will require powerful file conversion software.
Many programs can perform this task, but unfortunately many of them are not very good. They are expensive or clunky, which hinders the user experience. Others will limit the number of files you can convert.
An online tool like TinyWow is a great option when converting EPUB files due to its simplicity. Its interface is easy to use and best of all, it is free and without limits. Take a look below at how to use TinyWow to convert EPUB to Kindle.
- Head to TinyWow in your browser and navigate to the Epub to AZW3 Conversion tool.

- Drag and drop or upload your document into the new window that opens.

- Complete the captcha and check the box that says continue.

- TinyWow will begin the file conversion process.
- Once the process is complete, download the file to your computer.
Your eBook has now been converted from EPUB to Kindle. Please note that the file will only be available on the platform for 15 minutes, so be sure to download it before this time expires.
How to Convert EPUB to Kindle on an iPad
Tons of free apps to convert Epub to Kindle are available on the AppStore. However, installing this free app can consume a lot of storage while you try to determine which one will work, some apps crash, and others cause your phone to slow down or freeze. Plus non-skippable ads that will appear every time you use it.
Why bother installing it when we can easily convert it online using littlewow? Let’s dig in, here’s how:
- Open your browser and go to Epub to AZW3 Conversion tool.
- Tap the blue “Upload from PC or Mobile” button.

- Then choose the file you want to convert.

- Your file will start uploading and you will check the reCaptcha box.

- Download the file once the process is complete.
You have now converted EPUB to AZW3 on your iPad.
How to Convert EPUB to Kindle on Android
TinyWow is not just for iPad. It will work on any device as long as you have a browser where you can enter the site address and you are good to go. Now, here is a simple tutorial on how to convert EPUB to Kindle using mobile phones.
- Gonna Tinywow for the conversion tool in your phone’s browser.
- Tap the blue “Upload from PC or Mobile” button.

- Choose the file you want to convert.

- Your file will start uploading and you will check the reCaptcha box.

- Then download the file once it is complete.
The process will take a few minutes to complete.
How to Convert EPUB to Kindle Offline
With the help of free software Caliber, you can easily manage your e-book and convert it to a Kindle-compatible format. To install the software, go to the company page. website and download it. It is available for various operating systems such as Windows, macOS, Android and iOS. This is how to use the program.
- Open Caliber and press “Add Books” to upload the file you want to convert. You can also drag and drop the document if you prefer.

- Select the book title and tap “Convert Books.”

- Go to the Convert menu and change the output format to “AZW3”.

- Click “OK” to begin the process.

Your EPUB book has now been changed to AZW3 format.
How to Convert EPUB to Kindle Using Kindle Previewer
Kindle Previewer is a tool designed by Amazon to show authors how their books will look on the platform. When you upload an EPUB document to Kindle Direct Publishing (KDP), it is automatically converted to Kindle format. Take a look at how to transform your ebook using Kindle Previewer.
- Download and install Kindle Previewer.

- Open the program and click “Open Workbook” or drag and drop your document into the main window.

- The Book Conversion box appears, informing you that your book is being enhanced for viewing.

Your book will now be converted from EPUB to Kindle.
Frequently asked questions
What is the difference between AZW3 and MOBI?
Kindle supports AZW3 and MOBI e-book formats. They may look the same, but there are some significant differences between them. To begin with, MOBI tends to be quite basic and does not allow authors to change the font or layout of the text. On the other hand, AZW3 is a more sophisticated format that supports many styles, fonts, and even multimedia content.
Another significant difference is that AZW3 e-books are automatically protected by Digital Rights Management (DRM). That is one of the main reasons why this format is gradually replacing MOBI on Amazon.
Expand your readership
EPUB may be a popular e-book format, but it is not supported by Kindle. Therefore, to make your publication available to platform consumers, you will need to convert it to AZW3 or MOBI. This article shows you how to do this. It will guide you through converting your ebook from your desktop or mobile device.
Have you converted an eBook from EPUB to AZW3? What method did you use? Let us know in the comments below.