Download Calphad Optimizer

Dear user of the new Calphad Optimizer in FactSage!

Thank you for your interest in the Calphad Optimizer.

Please note that in order to use Calphad Optimizer, you need to have an active license for FactSage 8.2 and above.

To download and install Calphad Optimizer, follow the steps lined out here carefully:

  1. Download the installation files below. If you want to be notified when we upload important updates, please input your mail address to sign up for our Calphad Optimizer newsletter. Note that this is not mandatory. We will release a few Calphad Optimizer updates before the next FactSage release.
    Hint: You don’t know the customer ID and password? They are displayed if you click on “Calphad Optimizer” in the FactSage main menu.
  2. If you had installed a previous version of the Calphad Optimizer, please uninstall it via the Windows Add&Remove Programs app.
  3. Run the installer and follow the instructions. When starting, you will see a blue pop-up warning you against an unrecognized app. Please click “More info” and then “Run anyway”.
  4. Please start the Calphad Optimizer either from the FactSage main menu or by opening CalphadOptimizer.exe from FactSage82/CalphadOptimizer. Note: The license check can take a minute.

This instruction should work for most of you. If it does not, please contact us via 

Also, please send any question or feedback (positive, negative, bugs, feature requests) to! We want to know from you how we can improve!

Interested in news about Calphad Optimizer (new versions with new features, training courses)? Please register for our Calphad Optimizer newsletter here!