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    Horsepower Calculator | Convert Watts, Torque & RPM to HP

    Created by Md jony islam

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    Horsepower Conversion Calculator

    Calculate horsepower easily from watts, torque, or RPM using our online Horsepower Calculator. Convert between mechanical, electrical, and metric HP for accurate results. Utility users need a horsepower calculator to evaluate motor and engine power output when they enter their voltage and current and efficiency and power factor parameters for both single-phase and three-phase systems. The calculated horsepower output enables users to choose appropriate motor or engine models.

    Horsepower Calculator

    Horsepower Calculator
    V
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    pf
    HP

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    What do you need to know to calculate Horsepower?

    The determination of horsepower demands particular data points matching the selected system type. The calculation of mechanical horsepower involves multiplying torque by RPM, then diving by 5252. The formula to calculate horsepower in single-phase electrical systems is HP = (V × I × Efficiency × PF) / 746, and three-phase power requires the calculation HP = (√3 × V × I × Efficiency × PF) / 746. Hydraulic systems determine their horsepower through the calculation HP = (Pressure × Flow) / 1714. Horsepower can be determined by the pairwise multiplication of force and velocity, then divided by 33,000. The ability to understand these mathematical concepts makes it possible to perform exact horsepower evaluations of motors and engines as well as fluid systems.

    🙋 Try our Thermocouple Voltage Calculator . If you want to learn more about conversions using Electrical Engineering Project Calculators.

    Conversion using the Horsepower Calculation Formula

    To calculate horsepower (HP) for single-phase and three-phase electrical systems, use the following formulas:

    How to Calculate Single-Phase Horsepower Formula.

    HP = Voltage × Current × η × Power factor746

    How to Calculate Three-Phase Horsepower Formula.

    For three-phase systems, it is:

    HP = √3 × Voltage × Current × η × Power factor746

    Suggested Reading

    Horsepower conversion chart

    System TypeVoltage (V)Current (I) [A]EfficiencyPower Factor (PF)Horsepower (HP)
    Single-phase120100.850.91.10
    Single-phase240150.90.956.11
    Single-phase480200.95119.05
    Three-phase415150.90.855.82
    Three-phase400300.920.9528.07
    Three-phase690400.95177.28

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    About the Author

    Md Jony Islam

    Md Jony Islam: Multidisciplinary Engineer & Financial Expert:

    Md. Jony Islam is a highly skilled professional with expertise in electronics, electrical, mechanical, and civil engineering, as well as finance. Specializing in transformer service and maintenance for 33/11kV substations, he ensures reliable and efficient electrical systems. His mechanical engineering skills drive innovative designs, while his financial acumen supports effective project budgeting. With a strong foundation in civil engineering, he contributes to robust infrastructure development. Md. Jony Islam's multidisciplinary approach ensures efficiency, quality, and reliability across all projects.