Is it safe to delete Homebrew Cellar?
Command-line tools and libraries installed with Homebrew, in one folder for each package and version.
Review first
It's your own data, or hard to recreate. Decide item by item.
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What it is
Homebrew installs each package, which it calls a formula, into its own versioned folder here and links it into place so you can use it. Some packages are installed because another package needs them. Homebrew removes old versions after upgrades and in its regular cleanup, unless that's turned off. Everything here is installed software, so it's removed by uninstalling the package with Homebrew.
If it's removed
Tools you uninstall, and apps or scripts that rely on them, stop working until you install them again.
What to do instead
Uninstall packages you no longer use with Homebrew. Homebrew removes old versions on its own after upgrades and every 30 days.
The free analyzer finds it and explains it. The app never removes it.
Sources
Last checked on 26 Sep 2026. Every entry is written and checked by hand; the app and the command-line tool use the same words.