EPUBtoPDF - This is a easy to use website for converting EPUB files (ebook) to PDF format. It's a free online tool and requires no signup or anything. Just upload your epub file and you're good to go. EPUB is a free and open electronic publication format (from IDPF) specially designed for publishing e-books. An epub file is nothing but a zip archive that contains all the required assets (html, css, images etc) of the content(e-book), which can be easily accessable from all kinds of devices (phones, tablets, computer etc). For any reason, if you've any trouble, reading an epub file, then you can convert it to the plain old pdf format.

Note : The files (EPUB/pdf) are sent to/from server over secure connection (https) and it's deleted automatically after 30 minutes.