Arrow FOC Calculator - Western Whitetail
https://www.westernwhitetail.com/tools/archery/arrow-foc-calculator/
WEBThe standard FOC formula is FOC % = 100 x (AL/2)/L where L is the correct arrow length, and A is the distance from the nock groove to the finished arrow balance position, including the arrow point/insert weight, nock, and fletching. First, build your hunting shaft using the exact components – broadhead, vanes, nock, and cresting if desired.
DA: 98 PA: 47 MOZ Rank: 25