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Calibre is your one stop e-book manager that allows you to systematically organize your complete digital book collection. It offers you with the necessary support to convert your boo... is not an official representative or the developer of this application. Copyrighted materials belong to their respective owners.

Calibre review

Calibre is your one stop e-book manager that allows you to systematically organize your complete digital book collection. It offers you with the necessary support to convert your books into various formats, allowing you to sync them onto different devices so you can access them online at any time.

Functionality 4.5/5

Calibre is a straightforward software application that is powerful, efficient and extremely easy to utilize. With the ability to sort your collection by easily identifiable tags, you can categorize them according to the author, publisher, language, rating, format, series as well as news and tags. You can download e-books along with its covers, in bulk, merge e-books, convert them, individually or in bulk in various formats including MOBI, CSV, XML, etc. and also send these books to different devices. Download news from an array of news websites and collate them into an e-book or convert them into any particular format as per your desire, setup scheduled downloads from news sites and sources and read them when you are free. Create an assorted library with different categories and rename them or delete them, make necessary backups or restore deleted libraries, all with this easy application.

Design 4.5/5

Equipped with a simple yet efficient user interface featuring a set of tabs and buttons to help you maneuver around the application with ease, Calibre enables you to “drag and drop” various e-books from different directories by utilizing a simple browser. Easy to understand, there are three fields for searching and 15 different tabs that are well placed, this software application can be challenging at first, but it gets easier as you navigate and access different options. With everything sorted out in an organized manner on the main window, along with all the primary features, the program is suitable for both novice users as well as computer experts.

Usability 4/5

Created for those passionate about reading books, Calibre aims at providing a quick, easy and efficient performance, offering their users with a smooth sailing reading experience, packed with a ton of great features. Containing a comprehensive guide that provides help and support when needed, the application utilizes a good amount of system resources. The software is sized at 59MB, but after testing out the application and utilizing it to the fullest, it does not cause any freezing or lagging between commands. With all the necessary features available on one application, Calibre is by far one of the best solutions to compiling all your e-books in one place. 

Cross-platform use 3,5/5

Calibre is a free to download a software application that is compatible with all Windows Operating systems other than Windows XP, including Windows Vista, Windows 7, Windows 8 and Windows 10.


Acting as an online library to help you assemble and categorize your e-books in an orderly manner, Calibre is an easy-to-use portable software program that saves you time in managing your book collection on your digital device. With the ability to download and read magazines and daily news from all across the web in the form of e-books that can be converted into formats of your choice, you can access this online library anywhere on the web thanks to its special syncing functionality. Share your collection and backup your complete library with ease, manage your e-books by renaming them, deleting the ones you do not need or restoring the ones you do and enjoy full control with features unlike any other e-book software has to offer.


  • E-book converter
  • Full-screen reading mode
  • Easy to use.


  • E-book converter
  • Full-screen reading mode
  • Easy to use.

Interface 4.5

Content and features 4.5

Usability 4

Compatibility 3.5

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How much storage do you need?

Average app size in this category
Calibre Calibre
Space saved - 14.5MB

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