Kinetic Energy Calculator

In bowhunting, two critical factors that influence arrow performance are kinetic energy and momentum. Kinetic energy represents the power potential of an arrow at impact, determined by its mass and velocity. Momentum, on the other hand, reflects the arrow’s penetration capability—its ability to transfer that energy effectively into the target.

While lightweight arrows traveling at high speeds can deliver impressive kinetic energy, heavier arrows typically generate greater momentum. This often results in deeper, more consistent penetration.

Finding the right balance between arrow speed, which aids in range estimation and flatter trajectory, and arrow mass, which enhances penetration, is key to optimizing your setup.

To calculate your arrow’s kinetic energy, you’ll need two key measurements:

1. FInished arrow weight

(total weight in grains)

Arrow weight can be measured using a grain scale

2. Arrow Velocity

(in feet per second)

Measure velocity by shooting your arrow through a chronograph.






For the most accurate results, visit your local qualified archery pro shop—they’ll have the tools and expertise to help you dial in your setup.