Enter the bullet speed and the bullet mass into the calculator to determine the Bullet Energy. This calculator can also determine the mass or speed given the other variables.

Bullet Energy Formula

The following equation is used to calculate the Bullet Energy.

Eb= .5*S^2*m
  • Where Eb is the Bullet Energy (Joules)
  • S is the bullet speed (m/s)
  • m is the bullet mass (kg)

To calculate bullet energy, multiply the mass of the bullet by the bullet speed squared, then divide by 2.

What are the units for Bullet Energy?

The most common units for Bullet Energy are Joules.

How to Calculate Bullet Energy?

Example Problem:

The following example problem outlines the steps and information needed to calculate the Bullet Energy.

First, determine the bullet speed. In this example, the bullet speed is determined to be 32 (m/s).

Next, determine the bullet mass. For this problem, the bullet mass is measured to be 6 (kg).

Finally, calculate the Bullet Energy using the formula above: 

Eb= .5*S^2*m

Inserting the values from above and solving the equation with the imputed values gives: 

Eb= .5*32^2*6 = 3072 (Joules)