Bullet Energy Calculator

Use the calculator below to calculate the kinetic energy of a bullet. In order to determine the kinetic energy, you must know the velocity of the bullet and the weight of the bullet in grains. This is useful for comparing handloads, muzzle energy, different cartridges, and the energy of a bullet at different times in flight according to its velocity.  bullet

(Written in Javascript.)

Formula used:
Energy = .5 * weight * velocity^2 / 7000 / 32.175

Where weight is in grains, and velocity is in feet/second.

7000 is grains per pound, and 32.175 is acceleration due to gravity.

It can be re-written:
Energy = weight * velocity^2 / 450450

Power = weight * velocity / 1000

Power Factor