Arrow Speed Calculator
Estimate real-world arrow speed from IBO rating by adjusting for draw length, arrow weight, and string accessories.
Inputs
fps
in
gr
gr
Results
Estimated Speed
290 fps
Draw Length Penalty20 fps
Weight Penalty10 fps
How to Use This Calculator
- Enter your bow's IBO Speed Rating from the manufacturer specs.
- Set your actual Draw Length in inches and Total Arrow Weight in grains.
- Enter String Accessories weight in grains (peep, D-loop, silencers).
- Review your Estimated Real-World Speed in fps.
- Check Draw Length Penalty and Weight Penalty to understand how your setup deviates from IBO conditions.
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