Arrow Efficiency Calculator

Arrow Efficiency Calculator – Instructions

1. Select Preferred Arrow Efficiency
   • Max Speed: IBO arrow (5 grains/per pound of draw weight).
   • Max Efficiency: arrow ~10-15% over IBO (5.5 grains/per pound of draw weight).
   • Max Energy: arrow ~20% over IBO (6 grains/per pound of draw weight).
2. Chronograph Arrow Speed
   • Shoot three arrows and use the average of the three shots.
3. Enter Data Below for Results
   • Enter speed and arrow weight data into the calculator.
4. View Results*
   • Dark Blue: Optimal arrow weight.
   • Light Blue: Range of efficient arrow weights.
   • Red: Highlights specific speeds in fps and MAX energy (KE and M).

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*All data are approximate.