Calculate brake horsepower from torque and RPM, estimate wheel horsepower after drivetrain loss, convert horsepower to kilowatts, and compare power-to-weight ratio. Use this BHP calculator for engine output, dyno estimates, and performance comparisons.
Brake horsepower from torque:
Enter torque and RPM to calculate engine brake horsepower.
Torque from BHP:
Enter brake horsepower and RPM to calculate the torque needed at that engine speed.
Wheel horsepower:
Applies drivetrain loss to estimate wheel horsepower from brake horsepower.
Compare engine power:
Compares two BHP and weight combinations to estimate power-to-weight difference.
A brake horsepower calculator helps estimate engine power from torque and RPM.
It can help compare engine builds, dyno results, drivetrain loss, horsepower conversions, wheel horsepower, torque output, and power-to-weight ratio.
Your result shows brake horsepower, torque, RPM, estimated wheel horsepower, drivetrain loss, kilowatts, horsepower per 1,000 pounds, pounds per horsepower, and comparison results. These are estimates based on the values you enter.
Brake horsepower is the engine’s power output measured before drivetrain losses. It is often used to describe engine power at the crankshaft.
Multiply torque by RPM, then divide by 5252 when torque is measured in pound-feet.
BHP estimates engine output before drivetrain loss. Wheel horsepower estimates the power that reaches the wheels after drivetrain loss.
Some power is lost through the transmission, differential, axles, tires, and other drivetrain components before it reaches the wheels.