F.O.C. Calculator

F.O.C. is the percentage of the arrow’s total weight that is located in the
front half of the arrow. Higher F.O.C., within limits, can improve
performance in cross-wind conditions. Optimal F.O.C. is important for
target and bow hunting shooters involved in longer distances, especially
over 50 yards.

Optimal Target FOC Range:
For Target Archery, an optimal F.O.C. range is 7 -15% indoors and 10-15%
outdoors for up to 100 yards.

Optimal Bow Hunting F.O.C. Range:
For Bow Hunting, an optimal F.O.C. Range is 10 -15%.