Download for Windows
calibre works on Windows XP, Vista and 7.
Download calibre
(Version: 0.8.38 What's new) Alternate download location
While you wait for the download to complete, please consider donating to support the development of calibre.
Previous releases of calibre are available here.
Note
If you are updating from a version of calibre older than 0.6.17 first uninstall calibre, then delete the C:\Program Files\calibre folder (the location may be different if you previously installed calibre elsewhere) and only then install the new version of calibre.
You can sometimes improve the readability of fonts in the calibre e-book viewer by using the Microsoft ClearType Tuner. If you feel the fonts are blurry, try using this tool.