Recoil Energy Calculator
Compare how hard two loads kick — free recoil energy and velocity, with cartridge presets.
Free recoil energy is the physics of the kick; felt recoil also depends on stock fit, grip, recoil pads, and gun design. Powder-gas velocity is approximated at 4700 fps. Use it to compare loads, not as an absolute.
How it works
Felt recoil is subjective, but free recoil energy is a repeatable number you can compare. It depends on the firearm's weight, the bullet weight and velocity, and the powder charge. Heavier guns and lighter, slower bullets kick less; light guns firing heavy, fast bullets kick more. This calculator does the physics so you can settle the 'which kicks harder' debate with numbers.
It's especially useful when choosing a caliber for a new or recoil-sensitive shooter, or deciding whether a lighter carry gun is worth the extra snap. Use the cartridge presets for quick comparisons, or enter your exact load. Remember that stock fit, recoil pads, and gun design change how that energy feels — but free recoil energy is the honest starting point.
Educational estimates only — always verify zero and data by shooting, and follow all safety rules.