Upload your EPUB file using the picker above and the converter detects the source type and runs the EPUB → AZW3 pipeline. The result downloads automatically when conversion completes; no account needed for one-off conversions.
Is the EPUB to AZW3 converter free?
+
Yes — basic EPUB → AZW3 conversion is free with no registration required. Premium adds higher per-file size limits, more parallel batch workers, longer retention, and removes ads.
Yes — uploaded EPUB files are processed in isolated workers and deleted within minutes. We never view, retain, or share content. The retention window is at /privacy/.