Calculate your arrows kinetic engergy.



Arrow Speed in feet per second: (FPS)

Advertised IBO Speed in feet per second: (FPS)

Draw Weight in pounds: (lb)

String Accessory Weight in grains (peep, silencers, kisser, etc...): (grn) (Typical weight values are provided, actual known weight values should be entered if known)

Draw length in inches: (in)

Arrow Weight in grains: (grn)



IBO weight: -(lb) (Typical weight values are provided, actual known weight values should be entered if known)

IBO Draw Length: -(in) (Typical draw length values are provided, actual known draw length values should be entered if known)