Archery Tools
FOC Calculator
Spine Calculator
FOC Calculator
Shaft Length (inches)
✕
Shaft Weight (GPI)
✕
Point Weight (grains)
✕
Bushing Weight (grains)
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Nock Weight (grains)
✕
Single Vane Weight (grains)
✕
Vane Length (inches)
✕
Vanes Offset (inches)
✕
Distance from shaft end to start of vanes
Number of Vanes
✕
Wrap Weight (grains)
✕
Wrap Length (inches)
✕
Wrap Offset (inches)
✕
Distance from shaft end to wrap start
FOC
0.00%
Recommended FOC is 10–15%
Center Point
0.00″
Distance from point to arrow’s center of mass
