Horsepower Equations Calculator

Automobile Car Truck Design Formulas


Solving for rotating speed, revolutions per minute or rpm.
rotating speed

Inputs:

power
torque


Conversions:

horsepower = 0    = 0  horsepower
torque = 0    = 0  pound-foot

Solution:

speed
= NOT CALCULATED

Other Units:


Change Equation
Select to solve for a different unknown
rotating horsepower
Rotating horsepowerRotating horsepower
TorqueTorque
SpeedSpeed - revolutions per minute (rpm)
estimate engine or motor horse power for cars, trucks and motorcycles
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ET methodCalculate engine horsepower after a quarter mile run using the ET method.
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Dyno correction factorDyno correction factor. Factor corrects horsepower for normally aspirated internal combustion engine to a standard humidity, pressure and temperature after dynamometer measurement.
vehicles power to weight ratioCalculate a vehicles power to weight ratio. Acceleration is related to the ratio.

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