Creo Simulate > Additional Information > Units > To Convert Simulation Values to Principal System of Units
  
To Convert Simulation Values to Principal System of Units
Before you create your model you can specify a principal system of units. While creating your model in Creo Simulate, you can specify different standard or custom units for different simulation entities. If you want to convert the units of all simulation entities back to the principal system of units:
1. Click Home > Set Up > Convert Sim. Values to Principal
 
* This option is available only while in Creo Simulate.
2. Creo Simulate displays a warning message and asks for confirmation.
3. Click Yes to convert all simulation entities back to the principal system of units. Click No if you wish to retain the different units you selected for various entities.
 
* Angle units remain unchanged after you carry out this procedure.