Calibre

The gold standard of digital library management, format conversion, and reader synchronization.

26,379 Stars2,749 ForksPython / C++Release: v9.18.0

Download Assets Official Website Documentation

Tool Overview

Calibre is an open-source, full-featured e-book management suite that allows users to organize digital book collections, convert between dozens of formats, edit EPUB and AZW3 files, fetch rich metadata and covers, synchronize with e-readers, and serve books through a built-in content server.

System Requirements: Windows 10/11 64-bit, macOS 11+, or modern Linux distribution with glibc 2.31+

Key Capabilities & Features

Comprehensive library management with custom tags, series, and ratings

Multi-format bidirectional converter (EPUB, PDF, MOBI, AZW3, FB2, etc.)

Built-in full-featured E-book Viewer with bookmarks, notes, and TTS

Automatic metadata and cover fetching from Google Books, Amazon, and Open Library

Content Server for accessing your library over local Wi-Fi or Internet

Advanced EPUB & AZW3 visual editor and structural error debugger

Automatic news-to-ebook aggregator with over 1,500 news sources

Package Manager & CLI Installation

Install and update Calibre using your preferred operating system package manager or container runtime:

$ winget install calibre.calibre

Verified Official Release Downloads

v9.18.0

All binaries are sourced directly from the official developer release assets without re-packaging or modifications.

Windows x64Verified

calibre-64bit-9.18.0.msi

Size: 277.8 MBDownloads: 40,316

Download Windows

Generic BinaryVerified

calibre-9.18.0-arm64.txz

Size: 216.63 MBDownloads: 102

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Generic BinaryVerified

calibre-9.18.0-x86_64.txz

Size: 229.79 MBDownloads: 3,003

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macOS UniversalVerified

calibre-9.18.0.dmg

Size: 387.36 MBDownloads: 11,783

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Generic BinaryVerified

calibre-9.18.0.tar.xz

Size: 48.03 MBDownloads: 101

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Windows x64Verified

calibre-portable-installer-9.18.0.exe

Size: 247.19 MBDownloads: 4,479

Download Windows

Source Code ZIPVerified

calibre-v9.18.0-source.zip

Size: GitHub Archive

Download Source

Client-Side SHA-256 Binary Integrity Verifier

100% Client-Side. Verified locally in your browser using the Web Crypto API. No files are uploaded.

Drag & drop downloaded binary here, or browse file

Computes SHA-256 hash in real-time to guarantee file authenticity against developer releases.

Security Verification Status: Verified Authentic Official Release

Downloads link directly to the official GitHub releases hosted by kovidgoyal/calibre. Files are checked for authentic digital developer signatures and verified against open-source repository tags.