A site with an easy KE calculator in case anyone wants to know. http://www.bowsite.com/bowsite/features/practical_bowhunter/penetration/index.cfm
If you don't know your arrow velocity, you can use this calculator if you know your bow's IBO speed and plug in the rest of the numbers needed. That gives you a good approximation. http://www.backcountrybowhunting.com/articles/calc/
I just did it for the fun of it and was 1fps lower them what the crono says my bow is. Pretty darn good there...I like that. Thanks for sharing!