GARR TOOL Machinist’s Calculator

The download should start automatically.

Recommended:  Uninstall GTMC with Windows Control Panel

before installing a new version.


Look where your browser normally shows downloads, and

Run or Open the  install file to finish up.


If your download didn’t start, click here:

Download GTMC v5.098 for PCs 

What’s new in the Beta Test?

You’re just minutes away from Great Feeds and Speeds!

Next Steps:

  • Once the download finishes, run the file to install.
  • When GTMC comes up, you’re in!
  • If you get a “Certificate Error”, the fix is easy.  For Windows, uninstall using the Windows Control Panel and rerun the install.
  • Having install issues? Visit our Troubleshooting page for help.