WHP Water Horsepower Calculator


Calculating water horsepower (WHP) is essential in various fields such as engineering, agriculture, and hydraulics. This article presents a simple yet accurate WHP calculator implemented.

How to Use

To utilize the water horsepower calculator, follow these steps:

  1. Input the values for flow rate (Q) in gallons per minute (GPM) and total head (H) in feet.
  2. Click the “Calculate” button to obtain the water horsepower.


The formula to calculate water horsepower (WHP) is as follows:


  • WHP = Water horsepower (in horsepower)
  • Q = Flow rate (in GPM)
  • H = Total head (in feet)

Example Solve

Let’s solve an example where Q=100 GPM and H=50 feet:


Q: What is water horsepower (WHP)?
A: Water horsepower (WHP) is a unit of power used to measure the power of a pump to move water. It is calculated based on the flow rate and total head of the pump.

Q: Why is calculating water horsepower important?
A: Calculating water horsepower helps in selecting the appropriate pump for a specific application, ensuring optimal performance and efficiency.

Q: Can this calculator be used for different units of measurement?
A: No, this calculator specifically works with flow rates in gallons per minute (GPM) and total head in feet.


In conclusion, the water horsepower calculator provided in this article offers a convenient way to determine the power required for pumping water. By inputting the flow rate and total head, users can quickly obtain the water horsepower value. Incorporate this tool into your engineering projects or hydraulic system designs for accurate results.

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