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Foot Pounds of Energy Calculator

Formula

The formula to calculate the Foot Pounds of Energy is:

$E = \frac{M \times BS^2}{450,437}$

Where:

E is the Foot Pounds of Energy (foot-pounds)
M is the mass in grains (grains)
BS is the bullet speed (ft/min)

What are the units for Foot Pounds of Energy?

The most common units for Foot Pounds of Energy are foot-pounds. To calculate foot pounds of energy, multiply the mass in grains by the velocity squared in ft/min, then divide by 450,437.

Example Problem

Let's assume the following:

Mass (M): 150 grains
Bullet Speed (BS): 3000 ft/min

Step 1: Calculate the Foot Pounds of Energy:

$E = \frac{150 \times 3000^2}{450437} \approx 2999.57 \text{ foot-pounds}$

Therefore, the Foot Pounds of Energy is approximately 2999.57 foot-pounds.