The input format should default to the format the ebook is already in, and the output format should default to EPUB. If it's not, just choose EPUB from the drop-down. Convert!

Any Kindle e-reader can provide book lovers with various titles from the Amazon store, but you can also send your own ebook files to your Kindle as well.

The Kindle Fire and second-generation Kindle Reader include native support for PDF files, but to view these files on a first-generation Kindle Reader, you must convert them to MOBI or AZW format ...

How to convert an EPUB file Once you have an EPUB file on your hard drive, you have two basic options for converting it into the MOBI format your Kindle will accept: ...