Horsepower Formula:
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The horsepower formula calculates engine power output from torque and rotational speed. It provides a standardized way to measure and compare engine performance across different vehicles and applications.
The calculator uses the horsepower formula:
Where:
Explanation: The constant 5252 comes from the relationship between rotational work and time, where one horsepower equals 550 foot-pounds per second.
Details: Horsepower calculation is essential for engine performance analysis, vehicle design, mechanical engineering applications, and understanding the relationship between torque and rotational speed in power transmission systems.
Tips: This calculator is preset for 14.5 ft-lbs torque. Simply enter the RPM value to calculate the corresponding horsepower. RPM must be a positive number greater than zero.
Q1: Why is torque fixed at 14.5 ft-lbs in this calculator?
A: This calculator is specifically designed for applications requiring 14.5 ft-lbs torque, allowing quick horsepower calculations for this specific torque value.
Q2: What does the constant 5252 represent?
A: 5252 is derived from the conversion between foot-pounds per minute and horsepower (1 HP = 33,000 ft-lbs/min ÷ 2π radians per revolution).
Q3: At what RPM does torque equal horsepower?
A: Torque and horsepower are numerically equal at 5252 RPM due to the mathematical relationship in the formula.
Q4: Can I use this for electric motors?
A: Yes, the formula applies to any rotational power system, including electric motors, internal combustion engines, and other rotating machinery.
Q5: How accurate is this calculation?
A: The calculation provides theoretical horsepower. Actual power output may vary due to mechanical efficiency, transmission losses, and other real-world factors.