If you want a great free offline solution, we recommend you install Calibre.

Simply add your EPUB files, select the conversion format such as MOBI or AZW3, and click convert now.

is a free multi-file conversion site so you can choose to convert your EPUB to MOBI or AZW3.

Just drag and drop one or more EPUB files and once it’s converted simply click download.

is a great free online option that’s specifically designed for converting EPUB to AZW3.

To convert your EPUB to MOBI or AZW3, we recommend one of the following tools: The main difference between the EPUB open format and the Amazon proprietary formats is that typically MOBI and AZW3 files are protected by Digital Rights Management, or DRM, which locks down your eBook to a specific device associated with your Amazon account.

AZW3 is an updated and more sophisticated form of MOBI that works on all modern Kindles. To read your EPUB eBook on a Kindle you must first convert it to an Amazon proprietary standard such as MOBI or the newer AZW3 format.

Most eReaders support the EPUB format so they’re perfect for sharing, but unfortunately, they can’t be read on Amazon Kindle devices.

Calibre kindle tutorial