Calculate your arrow's kinetic energy (KE) in ft-lbs and Joules. Optimize your hunting setup for ethical shots and maximum impact power.
Kinetic energy (KE) is calculated using the formula: KE = (Weight in grains × Velocity² / 450,240). Our tool automates this to help you meet minimum hunting requirements.
Most experts recommend at least 25-30 ft-lbs of KE for small game and 40-50 ft-lbs for whitetail deer to ensure an ethical and effective harvest.