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

  • Book details: When dropping files add an option to add them to the book as data files
    • Closes tickets: 2072442
  • Edit book: A new action to toggle line wrapping mode in all code editors. Can be assigned via Preferences->Keyboard shortcuts->Global actions or added to the toolbar via Preferences->Toolbars->Book wide actions
  • Kobo driver: Add an option to force the SeriesID for all books in a series to have the same value

Bug fixes

  • Fix a regression in the previous release that broke merging of books when the confirmation for the merge was disabled
    • Closes tickets: 2071458
  • E-book viewer: Allow some header and footer items such as progress to overflow instead of being truncated
    • Closes tickets: 2072412
  • HTMLZ output: Make renaming of image files happen in filename order
    • Closes tickets: 2072405
  • MTP driver: Fix infinite loop when connecting to some devices with more 65K objects in their filesystem
    • Closes tickets: 2072384
  • Fix shortcut editing widget when Qt is using a theme that inserts accelerators into push button labels automatically

New news sources

  • Ancient Egypt Magazine, Minerva Magazine, Military History Magazine and World Archaeology Magazine by unkn0wn

Improved news sources

  • Instapaper
  • MIT Tech Review
  • Guardian
  • Liberation
  • The Times and Sunday Times
  • Bloomberg Businessweek
  • Times Literary Supplement