calibre

by Kovid Goyal · Office, PDF & email

Open sourceWindowsMacLinux

eBook library manager, converter and reader.

Official download from calibre-ebook.com (opens in a new tab)

Opens calibre-ebook.com, Kovid Goyal's own site. No mirror, no bundle.

Overview

What is calibre?

calibre organises eBooks, converts between formats like EPUB and AZW3, edits metadata and sends books to e-readers.

Key features

  • eBook library with metadata
  • Format conversion
  • eBook editor
  • Send to Kindle and Kobo

Best for

  • Managing a large eBook collection
  • Converting eBook formats
  • Reading on the desktop

Included in starter kits

Install

How to install calibre

  1. 1Open the official calibre download page on calibre-ebook.com.
  2. 2Pick the build for your system (Windows, Mac, Linux; check x64, ARM or Apple silicon where offered).
  3. 3Run the installer and read each screen; decline anything you did not ask for.
  4. 4Keep it updated from the app's own updater or your package manager.

Install from the command line

  • Windows · winget

    winget install --id calibre.calibre -e --source winget

  • Mac · Homebrew

    brew install --cask calibre

  • Linux · Flatpak (Flathub)

    flatpak install flathub com.calibre_ebook.calibre

Package IDs checked against the public winget, Homebrew and Flathub repositories on 1 Nov 2026. Build a script for several apps.

Safety

Download calibre safely

  • Check the domain

    The real download lives on calibre-ebook.com. Look-alike domains and search ads are the most common trap.

  • Skip mirrors

    Download portals can wrap installers in adware or old versions. You never need them for this app.

  • Verify if you can

    If the publisher lists a checksum, compare it with our in-browser checker before running the file.

  • Watch the installer

    Untick extras, browser changes or trials you did not ask for.

Open the checksum checker

Alternatives

calibre alternatives

Other office, pdf & email apps, closest platform match first.

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FAQ

calibre questions

Where can I download calibre safely?

Download calibre only from Kovid Goyal's official site at calibre-ebook.com. Avoid mirror and "download portal" sites, which can bundle extra software with the installer.

Is calibre free?

Yes. calibre is open-source software and free to use.

Does calibre work on Windows, Mac and Linux?

calibre is available for Windows, Mac, Linux. Check Kovid Goyal's download page for exact system requirements and whether your processor (x64, ARM or Apple silicon) is supported.

Can I install calibre from the command line?

Yes, with winget on Windows (winget install --id calibre.calibre -e); Homebrew on Mac (brew install --cask calibre); Flatpak on Linux (flatpak install flathub com.calibre_ebook.calibre). Package managers fetch the publisher's files and make updates easy.

What are good alternatives to calibre?

See the alternatives section on this page and the full office, pdf & email list on AltFTool, which shows each app's licence and platforms side by side.