While we strongly recommend Calibre as the best option because of its powerful library management and conversion tools, if you just want to read the books, you can also download the free Kobo app for PC. Double-click the file name in Calibre to open it and start reading. It will appear in the big white box in Calibre. Download and install it on your device, then follow these steps to read books.ġ) Open Calibre and click the red Add books button on the top-left.Ģ) Select your epub file. It also makes it easier to share books with others, and to send them to your devices. It has excellent library management features, and you can also use it to 'fetch' metadata about books from the Internet. The reason we love Calibre is because it is the most powerful tool of its kind around, supporting almost all ebook file formats. ( Also see: Five great apps for reading ebooks)įor Windows and Mac OS X, Calibre is the best software for opening epub files. Don't worry, this guide has you covered, no matter which device you use. If you are into reading, you are going to want to know how to open epub files. While some digital booksellers such as Amazon don't sell epub files, most other sources of digital books do so. An epub file is the most common format for digital books.