Click the "Click to Open" link located on the right, under your book cover image, in Calibre to open the folder Calibre saved your file in. Right-click the MOBI file and select "Copy" from the menu.

Calibre is a free, open-source e-book manager that lets users convert EPUB files to Kindle-readable MOBI files. Here's how to use it: Download and install Calibre.

The mobi file appeared in 2000 with the rise of Mobipocket, an early French ebook company. Like epub, the mobi is an XML-based file that is based on the legacy Open eBook Publication Structure ...

For example, if you read Kindle books on an iPad, downloading any MOBI file should automatically open your Kindle app.

Starting June 28, 2021, we will no longer support files in MOBI, PRC or AZK formats when publishing new reflowable eBooks or updating the content for previously published eBooks.