A tool designed for archery, typically a digital application or spreadsheet, determines the front of center (FOC) of an arrow. This measurement represents the balance point of the arrow as a percentage of the arrow’s total length. For instance, an arrow with a balance point 12% forward of the center point is said to have a 12% FOC. Archers input arrow measurements such as total length, balance point location, and component weights to calculate the FOC.
Proper arrow FOC is crucial for accuracy and arrow flight stability. A higher FOC generally leads to greater stability, particularly at longer distances, by moving the center of gravity forward. This improved stability can result in tighter groupings and reduced wind drift. While historically archers relied on manual calculations and adjustments, the widespread availability of these digital tools significantly simplifies the process, making it easier to fine-tune arrow performance.