HP to Torque Calculator:
Enter the values of horsepower, HP(W) and revolutions per minute, RPM to determine the value of Torque from horsepower, T(ft-lbs).
HP to Torque Formula:
The relationship between horsepower (HP) and torque is essential for understanding the power output of engines, particularly in automotive or mechanical applications. Torque is the rotational force produced by an engine, while horsepower is a measure of the engine’s overall power output. The formula used to convert horsepower into torque relates these two quantities based on the engine’s speed (RPM).
Torque (T) is typically measured in foot-pounds (ft-lbs), and horsepower is measured in horsepower (HP), while RPM (revolutions per minute) represents the rotational speed of the engine.
The torque generated by an engine is inversely proportional to the RPM at a given horsepower, meaning higher RPMs result in lower torque values, and vice versa. The formula that governs this conversion is derived from the definition of horsepower as the rate at which work is done.
Torque from horsepower, T(ft-lbs) in foot-pounds is calculated by multiplying horsepower, HP(W) in Watts by a constant (5252) and then divide the product by the revolutions per minute, RPM.
Torque from horsepower, T(ft-lbs) = HP(W) * (5252 / RPM)
T(ft-lbs) = torque in foot-pounds, ft-lbs.
HP(W) = horsepower in Watts, W.
RPM = revolutions per minute.
HP to Torque Calculation:
- Given: HP(W) = 150W, RPM = 3000RPM.
Torque from horsepower, T(ft-lbs) = HP(W) * (5252 / RPM)
T(ft-lbs) = 150 * (5252 / 3000)
T(ft-lbs) = 262.605ft-lbs.
- Given: HP(W) = 200W, T(ft-lbs) = 400ft-lbs.
Torque from horsepower, T(ft-lbs) = HP(W) * (5252 / RPM)
RPM = HP(W) * (5252 / T(ft-lbs))
RPM = 200 * (5252 / 400)
RPM = 2626.