How to Uninstall R on Mac: Fully Erase Apps, Libraries, and Cache Files

Learn how to uninstall R on Mac properly—simply deleting the app leaves behind libraries and cache files that can clutter your system until you dig deeper. ✨ I’ve helped colleagues clean up R installs that left behind gigabytes. of unused data, and the process is simpler than you’d think once you know where to look.

The first step is removing the R application itself from your Applications folder, but that’s just the beginning. Hidden folders like ~/Library/R/ and /Library/Frameworks/R.framework/ often hold onto files even after uninstallation.

If you installed R via Homebrew, running brew uninstall r in Terminal handles most of it—but always double-check with R --version to confirm it’s gone.

You’ll also want to clear out any residual configuration files in ~/.R/ and ~/.RData, which can cause conflicts if you reinstall later. This method ensures no traces remain, giving you a clean slate for future projects. The whole process takes about 10 minutes if you follow the steps carefully.

Fair warning: some users report permission errors when deleting system-level files. If that happens, boot into Safe Mode or use sudo rm -rf with caution—back up important data first. I’ve documented the exact commands in the full guide to keep you from missing a single file.

What you need

Step-by-Step instructions for removing R completely from your Mac

Here's the thorough method I use to purge R and its dependencies without leaving traces.

First, open Activity Monitor (Applications > Utilities). Look for any processes named R, RStudio, or Rscript and force quit them by selecting each and clicking the Quit Process button. This ensures no background processes interfere with the uninstall.

Next, drag the R.app from your Applications folder to the Trash. If you installed RStudio separately, move that to the Trash as well. Empty the Trash immediately to complete the removal. I always do this first—it’s the most obvious step, but people often forget it when dealing with complex software.

Open Finder and press Command+Shift+G to open the Go to Folder menu. Navigate to these locations in sequence, deleting the entire Library folder for R if it exists:

/Library/Frameworks/R.framework (delete the entire folder)
/Library/R (delete the entire folder)
~/Library/R (delete the entire folder)

If you encounter permission errors, authenticate with your admin password. This removes all installed packages, configurations, and cached data. Real talk: Skipping this step leaves behind leftover packages that can cause conflicts later.

Open Terminal (Applications > Utilities > Terminal) and run these commands one by one to remove system-wide dependencies:

sudo rm -rf /Library/Frameworks/R.framework
sudo rm -rf /Library/Frameworks/R.framework.versions
sudo rm -rf /Library/PreferencePanes/R.pane
sudo rm -rf /Library/LaunchDaemons/org.R-project.R*.plist

Enter your admin password when prompted. These commands target system-level files that aren’t removed by simply dragging the app to the Trash. Verify the commands complete without errors—if you see No such file or directory, those files were already removed.

In Terminal, run these additional cleanup commands to remove hidden cache and temporary files:

rm -rf ~/.R
rm -rf ~/.RData
rm -rf ~/.Rapp.history
rm -rf ~/.Rproj.user
rm -rf ~/Library/Caches/org.R-project.R

These commands target user-specific files that store session data, package caches, and project configurations. If you’re working with multiple R projects, this step ensures no residual data interferes with future installations.

To confirm R is fully removed, open Terminal and type R --version. If you see command not found, R is successfully uninstalled. If you still see version information, repeat Step 3 and Step 4 carefully.

For a clean slate, consider reinstalling R from the official CRAN website after uninstalling. This ensures a fresh start with no leftover configurations. I promise, this method works—no traces left behind.

Tips & tricks for completely removing R from your Mac

Here's what I've learned from years of helping others purge R cleanly—these tricks prevent those pesky leftover files that cause headaches later.

Process First, Then Applications: I can't stress this enough—always force quit R processes in Activity Monitor BEFORE dragging R.app to Trash. Background processes can lock files, making them impossible to delete later. Pro tip: Check for hidden processes by searching for "R" in the search bar at the top of Activity Monitor. Between us, I've seen people skip this and spend hours troubleshooting "command not found" errors because a background process was still running.

Library Locations Are Your Enemy: The three library folders in Step 2 (/Library/Frameworks/R.framework, /Library/R, ~/Library/R) are where R hides its most stubborn files. Here's the thing: macOS sometimes creates hidden symlinks or partial folders that don't show in Finder. After deleting these folders, open Terminal and run sudo find / -name "_R_" 2>/dev/null to search for any remaining R-related files. This command reveals any lingering traces that might cause conflicts later.

Terminal Commands Need Double-Checking: When running those sudo commands in Step 3, read each command fully before pressing Enter. That sudo rm -rf is permanent—no undo button. I recommend typing each command, then pressing the up arrow to review it one more time before execution. Also, if you see "No such file or directory" messages, that's actually good news—it means those files were already removed in previous steps.

Cache Files Are Sneaky: The hidden cache files in Step 4 (like ~/.RData and ~/.Rproj.user) can contain sensitive project data. If you're working with confidential research, consider backing these up before deletion. For most users though, these files are safe to remove completely—they're just temporary workspace data that R recreates when you reinstall. Think of it like cleaning out your browser cache: it's junk that slows things down.

Frequently asked questions

Got questions about uninstalling R from your Mac? You’re not alone! Here are some of the most common concerns—and their solutions—to make the process smooth and stress-free.

Wrapping up and next steps

Uninstalling R from your Mac doesn’t have to be a hassle—whether you’re freeing up space, switching tools, or just tidying up. By following the steps above, you’ve successfully removed R, its libraries, and leftover cache files, ensuring a clean slate. 🎉

Now that your system is refreshed, consider exploring alternative data tools or reinstalling R with a fresh configuration if needed. Ready to dive into your next project? You’ve got this! 🚀