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Range prep

Muzzle Energy Calculator

Convert bullet weight and velocity into ft-lb and joules so you can compare terminal performance.

Enter projectile mass in grains from your bullet or ammunition data. Do not enter total cartridge weight.

Use bullet mass in grains straight from your load data.

Enter velocity in feet per second at the point where you want energy calculated. For muzzle energy, use muzzle velocity.

Chronograph velocity at the distance your data was captured.

Energy (ft-lb)Kinetic energy expressed in foot-pounds force, calculated from the entered bullet weight and velocity. —
Energy (joules)The same kinetic energy converted to the SI unit joules. —

Energy is computed using classic kinetic energy. Check your velocity with a chronograph for best accuracy.