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

  • DOCX Output: Add support for SVG images
  • Now the generated DOCX will contain both the rasterized version of the SVG image and the original SVG image as the preferred source, which is supported by modern versions of Word.
  • E-book viewer: Allow configuring the actions triggered by touch gestures
    • Closes tickets: 2023367
  • DOCX Input: Add support for SVG images

Bug fixes

  • Windows: Fix a regression in the previous release that could cause files to be deleted if one of the files/folders was open in another program while changing title/author in calibre
  • macOS: Fix extra dock icons visible when doing a job using Qt WebEngine such as converting to PDF or searching in Get books
    • Closes tickets: 2023395
  • macOS and Linux: Fix an error when changing metadata or deleting books whose files are owned by another user
    • Closes tickets: 2023476
  • CHM Input: Yet another regression opening CHM files with missing internal files on windows
    • Closes tickets: 2023377
  • CHM Input: Resolve absolute links to resource files from the root of the CHM file
    • Closes tickets: 2023431

New news sources

  • The India Forum by unkn0wn

Improved news sources

  • Guardian & Observer
  • Harper's Magazine Print recipe
  • Live Mint