Translations:Macro ObjectInfo/5/en

From FreeCAD Documentation

Then start FreeCAD, open your STEP file and switch to the "Info" workbench with the workbench switcher or by going to the View → Workbench menu. Now select your solid, and click on the "Info" icon; the left taskbar will show some information on the model, including volume, surface area, center of mass and moment of intertia.