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calibre · earlier release

calibre 8.6.0

The URL Kovid Goyal published for this release, and the SHA-256 of every file in it, so you can prove the copy you have is that one and not something else wearing the same name.

Released 10 July 2025.

This is not the current release

calibre is now on version 9.13.0. An older build stops getting security fixes, so install one only when you have a reason: a plugin that broke, a machine that cannot run the new one, a bug you need to reproduce. If you just want calibre, take the current version.

Files in calibre 8.6.0

Which one of these you want

The scope label says who the installer writes for. A user build installs into your own profile and needs no administrator rights; a machine build installs for everyone and does. On a work laptop where you cannot elevate, the user build is often the only one that will run at all. Silent install switches are on the same data.

Check the file you have

Windows does this without installing anything. In PowerShell:

Get-FileHash .\calibre-64bit-8.6.0.msi -Algorithm SHA256

Compare what it prints with the value above. If they match, your copy is byte-for-byte the one Kovid Goyal published. If they do not, it is a different file, whatever it is called and wherever it came from. Paste a hash into the verifier and it will tell you which release it belongs to.

If PowerShell is blocked by policy on the machine, the same thing works from plain cmd with certutil -hashfile calibre-64bit-8.6.0.msi SHA256. On macOS or Linux it is shasum -a 256 calibre-64bit-8.6.0.msi.

If the link no longer works

Publishers retire old releases, and we do not host copies, so a link from an earlier version can stop working without notice. Two ways it fails: an honest 404, or — more confusing — the server answers normally but hands you the current downloads page instead of the file. If what arrives is a few kilobytes of HTML rather than an installer, that is what happened.

The hash on this page stays useful either way. It still identifies calibre 8.6.0 wherever you find a copy, which is the whole point of publishing it: you can accept a file from somewhere else and still prove it is the one Kovid Goyal built.

Releases either side of this one

Every calibre release we index · where this data comes from