Enter the power and weight of a car or machine to calculate the power-to-weight ratio of that device.

Power-to-Weight Ratio Formula

The following formula is used by the calculator above to determine the power-to-weight ratio of a car of the system.

PTW= P / W
  • Where PTW is the power to weight ratio
  • P is power, typically expressed in horsepower
  • W is weight, typically expressed in lbs or kgs

In the case of a ratio, the most important thing to keep in mind is to make sure units are consistent in the end results. For this, the power can be any unit of power, and the same goes for weight, as long as the power-to-weight ratio is expressed in those same units. The better the power-to-weight ratio of a car, the better it typically performs on a straight line and track. A car with a poor power-to-weight ratio will likely be slow and sluggish around corners.

Power to Weight Ratio Definition

Power to weight ratio is a measure of how much power a vehicle or machine has in relation to its weight. It helps determine the overall performance and efficiency of the vehicle or machine by indicating how much power is available for each unit of weight.

How to calculate power to weight ratio?

How to calculate power to weight ratio?

  1. First, measure the power output.

    Most typically this is the total engine power output of a car or system.

  2. Next, measure the weight.

    Measure the weight of the object or the system.

  3. Finally, calculate the power to weight ratio.

    Calculate the ratio using the formula above.

FAQ

What is a power to weight ratio?

A power-to-weight ratio measures the efficiency of a system with respect to a total power output per unit of weight.

power to weight ratio calculator
power to weight ratio formula