Does anyone here know the formula for calculating KE for your Bow and Arrow.

http://www.iowabowhunters.org/KineticEnergyCalc.asp

Enter arrow weight and speed press enter

Arrow speed (fps) x Arrow speed (fps) x Arrow weight (grains)

divide all of that by 450,240

If you actually want to do the math here is the formula

KE = (weight / 450240) x (velocity x velocity)

It just occured to me that you may have actually wanted the formula

Can some of you post your numbers?

I shoot goldtip hunter 5575 arrows 31" with 125gr Muzzy at 237fps (not sure of arrow weight)

Can I ask why you would do the math formula instead of going to bowjackson.com and punching in your arrow weight and speed and clicking a button. Does it all for you. Same thing right? But hey, maybe I'm lazy. lol

I shoot Beman ICS 400's, 100 grain tip(386gr)...shooting 282fps...68 ft-lbs of KE.

I shoot 30in 74lb pse firestorm
29 3/4" Gold Tip 7595 advantage pro hunters w 125g muzzy broadhead total weight 449.58g
at 270fps

72.29 ft lbs of energy

Hazcon I'm guessing your total arrow weight to be aprox 430.2g

You can use the arrow builder on the gold tip website to get your arrow weight.
http://www.goldtip.com Click on arrow builder

You'll know you arrow better than I, I was just trying to get close. A 430.2g arrow @ 237 fps = 53.67 ft/lbs and a foc of 12.54%

Adams thanks for the info on the Goldtip site. I was wondering what everything weighed.
Looks like Im at 396 grains and foc of 10.99

I'm getting 234 fps. More than enough to do the job. But I believe that speed is only part of of the equasion.