Calculate the kinetic energy (muzzle energy) of a projectile.
Input Parameters
Calculation Results
Enter mass and velocity to calculate energy
About this calculator
Quick Reference
1 grain0.0648 grams
1 ft-lb1.3558 Joules
1 m/s3.2808 fps
7000 gr1 lb
Overview
Muzzle energy is the kinetic energy of a bullet as it leaves the muzzle of a firearm. It is a common measure of the destructive potential of a firearm/bullet combination.
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Pro Tips
Mass is often measured in grains (gr) or grams (g).
Velocity is often measured in feet per second (fps) or meters per second (m/s).
The formula is the standard kinetic energy formula: 1/2 * m * v².
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Fun Facts
"Small changes in velocity affect energy much more than small changes in mass, because velocity is squared."
"A typical 9mm bullet might have 400-500 Joules of energy."
"A .50 BMG round can have over 15,000 Joules of energy!"
