FreeCAD: How to calculate a volume, surface area and gravity center of a shape?

Select [View]-[Panels]-[Python console] in menu bar to display Python console].

If you enter following commands, each value will be displayed in Python console.

• If you want to calculate a surface area ： App.ActiveDocument.getObject("Your object name").Shape.Area
• If you want to calculate a volume ： App.ActiveDocument.getObject("Your object name").Shape.Volume
• If you want to calculate a gravity center  ： App.ActiveDocument.getObject("Your object name").Shape.CenterOfMass

Note: If shape's ShapeType is "Compound", a gravity center cannot be calculated with the method previously described. To check shape's ShapeType, execute following command.

• App.ActiveDocument.getObject("Your object name").Shape.ShapeType

If shape's ShapeType is "Compound", you can use Shape.solids to get each solid's gravity center.

• App.ActiveDocument.getObject("Your object name").Shape.Solids[0].CenterOfMass
• App.ActiveDocument.getObject("Your object name").Shape.Solids[1].CenterOfMass
• ...