Version3(as of 9/14/2017)
PlatformsWindows, Mac, Linux
LicenseOpen Source
Go to Website
Rating:3.8  |  97 Votes

Main Features

  • Supports an extensive list of eBook formats for reading, creating, and converting
  • Offers a convenient way to download eBooks from Internet stores
  • Downloads news stories and converts them into eBook form
  • Provides helpful library management tools

Software Overview

Screenshot of Calibre 3.7
Screenshot of Calibre 3.7

Calibre is a free, open source eBook application that allows you to manage your collection of eBooks on your computer. In the application, you can read, create, and edit your eBooks in a variety of formats.

Calibre offers helpful management tools to organize your eBook library. You can sort your books by title, author, date published, rating, etc., which allows you to search through your collection quicker. The application provides editing tools to help you customize the appearance of your eBooks. With these tools, you can change the font, style, images, etc. of your eBook. Calibre also provides a convenient avenue to download new eBooks. The program allows you to search for your eBook by title, author, or keyword and check/uncheck the stores you want to search. You can also download news in eBook format from your news websites such as The New York Times, Time, Newsweek, ESPN, and Deadspin.

Along with the management features, Calibre supports a wide array of popular eBook file formats. It can read eBook formats such as EPUB, LRF, HTML, LIT, MOBI, PDF, Topaz, Text, and SNB. It also allows you to create and convert eBook formats including EPUB, MOBI, AZW3, KFX, FB2, HTMLZ, LIT, LRF, PDB, PDF, TXT, and ZIP. In addition to supporting eBook formats, Calibre can also read popular word processing files with .DOCX, .DOC, and .ODT extensions.

Calibre is a good eBook managing application. It supports a wide array of eBook formats, provides helpful library management tools, and makes it easy to download new content. If you own any eBooks or are looking to start, give Calibre a shot.

Primary File Type

epub icon.EPUBOpen eBook File

Supported File Types

ExtensionFile Type
.EPUBOpen eBook File
.AZW3Amazon KF8 eBook File
.AZW4Amazon Print Replica eBook
.BOOKiBooks Author Document
.CBCComic Book Collection
.CBRComic Book RAR Archive
.CBZComic Book Zip Archive
.CHMCompiled HTML Help File
.DJVDjVu Image
.DJVUDjVu Image
.DOCMicrosoft Word Document (Legacy)
.DOCXMicrosoft Word Document
.FB2FictionBook 2.0 File
.HTMHypertext Markup Language File
.HTMLHypertext Markup Language File
.HTMLZZipped HTML eBook
.IBAiBooks Author Document
.KFXAmazon KF10 eBook File
.LITeBook File
.LRFSony Portable Reader File
.LRSLibrie Reader Source File
.LRXSony Portable Reader File
.MARKDOWNMarkdown Documentation File
.MOBIMobipocket eBook
.NCXEPUB Navigation Control XML File
.ODTOpenDocument Text Document
.OPFOpen Packaging Format File
.PDBPalm Desktop Database File
.PDFPortable Document Format File
.PDRProntoDoc for Word Recovered Document
.PMLPalm Markup Language File
.POBIKindle Touch Periodical File
.PRCMobipocket eBook File
.RARWinRAR Compressed Archive
.RTFRich Text Format File
.SNBShanda Bambook eBook
.TCRPsion Series 3 eBook File
.TEXTPlain Text File
.TPZKindle Topaz eBook File
.TXTPlain Text File
.XHTMLExtensible Hypertext Markup Language File
.XPSXML Paper Specification File
.ZIPZipped File

Additional Related File Types

ExtensionFile Type
.AZWAmazon Kindle eBook File
.AZW1Amazon Topaz eBook
.AZW2Kindle Active Content App File
.AZW3Amazon KF8 eBook File
.CALIBRECalibre Device Data File
.PMLZZipped Palm Markup Language File
Updated 9/14/2017