Bow Speed (FPS) Calculator
Estimate realistic bow speed by adjusting from IBO benchmark conditions.
Speed = IBO + (DW-70) + 10 x (DL-30) - ((Arrow Weight-350)/5) - string penalty.
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Combine speed outputs with arrow weight, KE, and momentum tools to compare realistic setup tradeoffs.
FOC Guide
Speed alone does not define performance. Pair this page with FOC checks to keep flight stable while adjusting draw specs and total arrow mass.
Open FOC guide to align your speed target with tuning priorities.
FAQ
Why is my estimated speed lower than IBO?
Most real setups use heavier arrows and different draw specs than IBO test conditions.
Should I trust this instead of a chronograph?
Use it for planning, then verify exact speed with a chronograph.
Does string accessory weight matter?
Yes. Added string weight can reduce launch speed, especially on lighter setups.