Frequently Asked Questions
What is a good FOC for hunting arrows?
Typical hunting FOC falls in the 10-15% range, balancing accuracy and penetration. Many bowhunters prefer 12-19% for added broadhead forgiveness at longer distances.
How do I measure my arrow balance point?
Rest the fully finished arrow (point, vanes, and nock installed) on a thin edge and slide it until it balances level. Measure the distance from the nock end to that balance point.
How is FOC calculated?
FOC equals the balance point distance from the nock minus half the arrow length, divided by the arrow length, times 100. A balance point ahead of center gives a positive FOC.
How do I increase my arrow FOC?
Add weight toward the front by using a heavier broadhead, brass insert, or weighted point, or shorten the shaft. Reducing rear weight, such as lighter vanes, also raises FOC.
What does FOC mean in archery?
FOC stands for Front of Center. It tells you what percentage of the total arrow length sits between the physical center and the balance point. A higher value means more weight toward the point.
Can my FOC be too high?
Yes. An extreme FOC above 25-30% makes the arrow fly point-down and produces a very steep trajectory. For most hunters, staying in the 10-19% range gives the best balance between stability and trajectory.
Should I measure from the point or from the nock?
Always from the nock. This calculator expects the distance from the nock end to the balance point. Measuring from the point would give an incorrect result.
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Fishing & Hunting Disclaimer: Estimates only. Verify regulations and practice safety.
This calculator is for educational and informational purposes only. Ballistics, archery, trolling-depth, and yield figures are simplified estimates and do not replace field verification, sighting-in, or chronograph data. Bag limits, seasons, legal methods, and equipment rules vary by state and locality and change frequently, so always confirm current regulations with your state wildlife agency before fishing or hunting. Follow all firearm and tree-stand safety practices, including a full-body harness when elevated. Never rely on these estimates for a shot you are not confident in.