Horsepower Calculator
Convert mechanical power between watts, kilowatts, megawatts and horsepower.
Result
About this calculator
Convert mechanical power between watts, kilowatts, megawatts and horsepower.
Enter valid values, choose the units you need, then select Calculate. The calculation runs in your browser and does not require an account.
How to use this calculator
What to enter
Enter or select the following as requested: Power; Result unit. Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The mechanical result estimates torque, rotational speed, or power from the entered values and the relationship used by the tool. Check whether the inputs refer to shaft speed, output speed, rated power, or load torque, and keep units consistent.
When to use it
Use this for preliminary rotating-machinery or mechanical-system calculations. Verify the operating point, gear ratio, losses, and equipment ratings before using the estimate for design or operation.