Muzzle Energy Calculator

    My favorite Muzzle Energy Calculator was hosted by AirHog, makers of high quality air gun tanks, valves and other accessories. Airhog redesigned their website a while back and have taken the old site offline, which included the calculator. Through the magic of the Internet Archive, I have resurrected and improved their calculator. Hopefully they will not mind, I have emailed them asking for permission. If anyone is interested, my improved javascript code for the calculator is here.

    First choose the system of units, either English Units (also called United States customary units, Traditional units or Imperial units) if you are in the USA or Metric if you are in Europe. The rest of the world uses one or the other depending on how manufacturers have decided to market their products.

    Then enter two of the three variables (weight, velocity and energy) and hit Calculate. The system will calculate the third variable which you did not enter.

    Muzzle Energy Calculator

    English Metric
     ft/s  m/s
    Pellet Weight:
     grains  g
    Muzzle Energy:
     ft-lbs.  joules


    Steve Johnson

    I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!