How to quickly convert EPUB files to Kindle format - and why it matters
Amazon is cutting off all pre-2013 Kindle devices from its store on May 20, 2026.
In response to Amazon's announcement that it will sever all pre-2013 Kindle devices from the Kindle ecosystem on May 20, 2026, ZDNET has updated a critical guide for users. Senior Contributing Editor David Gewirtz details the use of the free, open-source Calibre software to convert EPUB and other e-book formats into Kindle-compatible files (like MOBI or AZW3). This process allows owners of first-generation, second-generation, and Kindle DX models—which can no longer use their obsolete 3G networks for wireless transfers—to sideload books via a USB connection, effectively resurrecting their devices.
The guide provides a step-by-step walkthrough for installing Calibre, configuring it for e-book management, and performing the format conversion. This method bypasses Amazon's increasing restrictions on supported formats and DRM-locked content, granting users full control over their digital libraries. It is presented as a direct solution to Amazon's 'unprecedented and draconian' policy shift, which will block millions of older devices from accessing the Kindle Store entirely. The technique empowers users to source e-books from a vast array of online retailers and free libraries beyond Amazon's walled garden, ensuring their hardware remains functional long after official support ends.
- Amazon will cut off all Kindle devices released before 2013 from the Kindle Store on May 20, 2026, blocking new purchases and downloads.
- The open-source Calibre software can convert common EPUB files into Kindle-compatible formats like MOBI or AZW3 for sideloading.
- This method is essential for first- and second-generation Kindles and the Kindle DX, which relied on now-defunct 3G networks for wireless book transfers.
Why It Matters
Millions of users can preserve their investment in older Kindle hardware and maintain access to a global library of e-books beyond Amazon's ecosystem.