Calibre is an e-book library manager. It can view, convert and catalog e-books in most of the major e-book formats. It can also talk to many e-book reader devices. It can go out to the Internet and fetch metadata for your books. It has a cornucopia of features divided into the following main categories:

  • Library Management
  • E-book conversion
  • Syncing to e-book reader devices
  • Downloading news from the web and converting it into e-book form
  • Comprehensive e-book viewer
  • Content server for online access to your book collection

Is Calibre an e-book reader?

No, Calibre is an e-book manager in which you can organize existing e-books into virtual libraries, displaying, editing, creating and converting e-books, as well as syncing e-books with a variety of e-readers.

Can I write an e-book with Calibre?

Yes. Calibre can turn your personal documents to e-books or create them from scratch. It has automatic style helpers and scripts generating the book's structure.

Which devices does Calibre support?

Calibre is compatible with almost any e-reader, phone or tablet, as well as Windows, Mac and Linux devices. You can transfer your e-books from one device to another in seconds. Calibre will send the best file format for your device, converting it if needed, automatically.

What formats does Calibre support conversion to/from?

Calibre supports the conversion of many input formats to many output formats such as:

  • Input Formats: AZW, AZW3, AZW4, CBZ, CBR, CB7, CBC, CHM, DJVU, DOCX, EPUB, FB2, FBZ, HTML, HTMLZ, LIT, LRF, MOBI, ODT, PDF, PRC, PDB, PML, RB, RTF, SNB, TCR, TXT, TXTZ
  • Output Formats: AZW3, EPUB, DOCX, FB2, HTMLZ, OEB, LIT, LRF, MOBI, PDB, PMLZ, RB, PDF, RTF, SNB, TCR, TXT, TXTZ, ZIP.

Can Calibre read RSS feeds?

Yes, Calibre can deliver news to your device from hundreds of news sources or any RSS feed.

Does Calibre offer cloud storage for my library?

Calibre doesn't offer cloud storage, but it does integrate with most major cloud providers, including Google Drive, Dropbox, and OneDrive. This way, you can set up your eBook library in the cloud and access the content from your phone or tablet.

What's New

New features

  • E-book viewer: Read Aloud: Add an option to control the position of the popup control bar. It can now be placed along the top or bottom edges so as to overlap less with text.
  • System tray menu: Add action to restart calibre. Closes tickets: 2087754
  • Tolino driver: Support new firmware

Bug fixes

  • Windows: Enable popup OS notifications even when system tray icon is disabled to match behavior on other platforms. Notifications can be disabled via Preferences->Look & feel->Disable notifications on job completion
  • Fix a regression that caused incorrect English transliteration of Japanese text even when the UI language is set to Japanese. Closes tickets: 2087850
  • macOS: Dark mode: Fix a regression that caused the scrollbar to no longer be transient
  • Closes tickets: 2088153
  • DOCX Input: When some text has multiple footnotes insert a space between the consecutive foot note numbers so that they are distinct. Closes tickets: 2089433
  • DOCX Input: Fix ToC nesting not working if the styles for the ToC levels dont use integer margins
  • E-book viewer: Fix spurious chapter transition after configuring Read aloud
  • PDF Input: Fix reflow of lines in files with little text not working. Closes tickets: 2089436

New news sources

  • Economist News by unkn0wn

Improved news sources

  • Economist
  • Indian Express
  • Economist World Ahead
  • Frontline
  • Infobae