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.
    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. While downloading, consider to register for the Calphad Optimizer newsletter to stay tuned about updates, new features, training courses etc. here:
  3. Run the installer and follow the instructions. When starting, you might 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 FactSage83/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!

You can learn more about the updates and new features of the individual versions here: