Enter the total thrust and the velocity of a vehicle into the calculator to determine the total equivalent horsepower.

Thrust to Horsepower Formula

The following formula can be used to convert total thrust to total horsepower. 

HP = T * V / 375
  • Where HP is the horsepower
  • T is the thrust in pound-force
  • V is the velocity in miles per hour

To calculate the horsepower from thrust, multiply the thrust by the velocity, then divide by 375.

Thrust to Horsepower Definition

Converting a thrust to a horsepower involves multiplying the total pound-force of thrust by the velocity of the object.

Thrust to Horsepower Example

How to convert a thrust to horsepower?

The first step in calculating horsepower from thrust is to measure the total thrust the engine can output or is current outputting during the time of movement.

In this example, the total thrust is measured to be 5000 lb-force.

The next step is to measure the maximum velocity of the vehicle during the time that that thrust is being supplied by the engine.

In this case, the maximum velocity is measured to be 60 MPH.

Finally, using the formula above, calculate the total estimated horsepower given the thrust and maximum velocity provided.

HP = T * V / 375

HP = 5000 * 60 / 375

HP = 800 HP

FAQ

What is the significance of the number 375 in the thrust to horsepower formula?

The number 375 in the thrust to horsepower formula is a conversion factor that translates the product of thrust (in pound-force) and velocity (in miles per hour) into horsepower. This factor simplifies the calculation by incorporating constants used in the definition of horsepower and the conversion between different units of measure.

Can this formula be used for any type of vehicle?

Yes, this formula can be applied to any vehicle or object for which you can measure thrust in pound-force and velocity in miles per hour. However, it is most commonly used for aircraft, rockets, and other vehicles where thrust is a primary means of propulsion.

How does thrust differ from horsepower?

Thrust is a measure of the force applied in a specific direction, typically generated by an engine or motor to propel a vehicle forward. Horsepower, on the other hand, is a unit of power that measures the rate at which work is done or energy is transferred. While thrust directly influences a vehicle’s acceleration and ability to overcome resistance, horsepower is a broader measure of an engine’s overall performance and efficiency.