Power to Mass Ratio Calculator

Formula

The formula to calculate the Power to Mass Ratio (PMR) is:

\[ PMR = \frac{P}{M} \]

Where:

\( PMR \) is the Power to Mass Ratio (W/lb or hp/kg)
\( P \) is the total power output (W or hp)
\( M \) is the total mass (lbs or kg)

What is Power to Mass Ratio?

The Power to Mass Ratio is a measure of the performance of an engine or other power source in relation to the weight of the vehicle or object it powers. It is commonly used in automotive, aerospace, and performance engineering to compare the efficiency and capability of different engines and machines. A higher power to mass ratio indicates better performance and acceleration.

Example Calculation

Let's assume the following values:

Total Power Output (P) = 400 hp
Total Mass (M) = 2000 lbs

Using the formula to calculate the Power to Mass Ratio:

\[ PMR = \frac{400}{2000} = 0.2 \text{ hp/lb} \]

The Power to Mass Ratio is 0.2 hp/lb.