Uses this formula to calculate kinetic energy, with automatic unit conversion: KE = 1/2mv² (Kinetic Energy = 0.5 * mass in kg * (meters per second ^ 2)).
Muzzle energy is not always easy to handle.
Additional notes of potential interest:
For a constant velocity, if the mass is doubled, the energy is doubled.
For a constant mass, if the velocity is doubled, the muzzle energy increases four times.