I've found this tool to be one of the easiest ways to figure out my balance. Simply punch in you measurments. For flying wings/deltas use 16-18% MAC. For conventional aircraft use 25-33%. Enter Root Chord (A):  Enter Tip Chord (B):  Enter Sweep Distance (S): Enter Half Span (Y): Enter %MAC Balance Point: Sweep Distance @ MAC (C) = Mean Aerodynamic Chord (MAC) = MAC Distance from Root (d) = Balance Point @ Root Chord (CG) =