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

  • KEPUB Output: Add an option to generate KEPUB files that have better text justification at the cost of gaps in highlighting when used on the Kobo. Closes tickets: 2107778
  • E-book viewer: Allow the background image specified in the Style section of the viewer preferences to extend under the page margins as well

Bug fixes

  • E-book viewer: Fix a regression that broke the "show book in main calibre program" link. Closes tickets: 2110117
  • News download: Fix Next/Previous links not working when the pointed to article failed to download
  • E-book viewer: Handle links to missing internal files with an error popup rather than becoming non-functional
  • E-book viewer: Fix some links not being processed correctly for very large EPUB files with many internal HTML files
  • Get books: Update ebooks.com plugin for website changes
  • Metadata review dialog: Fix merging of tags not working correctly
  • Wayland: Workaround Qt/Wayland bug that prevents the menu of the Layout button from showing. Closes tickets: 2109755
  • Prevent recursion when creating base temporary folder if something on system deletes the created temporary folder. Closes tickets: 2109612

New news sources

  • Frieze Magazine by Kabonix
  • Improved news sources
  • NYTimes Book Review
  • Washington Post
  • tagesschau
  • Hindu
  • Economist
  • Economist Espresso