Ensure you have the latest version from the official Calibre website .

Here is a comprehensive guide to downloading and importing your Amazon eBooks into Calibre using the most reliable methods still functioning today. Prerequisites: Setting Up Calibre for Amazon Content

Downloading Amazon eBooks into Calibre has become more challenging due to recent policy changes, but it remains the gold standard for managing a DRM-free personal library. As of 2026, Amazon has restricted several traditional methods, specifically removing the "Download and transfer via USB" option for many titles.

Always restart the application after installing plugins to activate them. Method 1: Using a Physical Kindle Device (Most Reliable)

Download the latest DeDRM tools (currently version 10.0.9). In Calibre, go to Preferences > Plugins > Load plugin from file and select the DeDRM_plugin.zip .

Go to Preferences > Plugins > Get new plugins , search for "KFX Input," and install it. This allows Calibre to recognize newer Amazon book formats.