WHP to HP Calculator


About WHP to HP Calculator (Formula)

The “WHP to HP Calculator” is a practical tool used to convert between two units of power: “Water Horsepower” (WHP) and “Horsepower” (HP). This conversion is particularly relevant in various engineering and industrial applications, especially in the context of fluid dynamics and hydraulic systems. Understanding how to convert between WHP and HP is crucial for designing and assessing the performance of pumps, turbines, and other equipment that involve the transfer of fluid energy.

Here’s a detailed explanation of WHP, HP, and the formula for converting between them:

  1. Water Horsepower (WHP):
    • WHP is a unit of power that specifically measures the power generated or required to move a fluid, typically water, within a hydraulic system. It quantifies the rate at which work is done on or by the fluid.
    • The formula for calculating WHP is: WHP = (Flow Rate x Head) / 3960
    • In this formula, “Flow Rate” represents the volumetric flow rate of the fluid (usually in gallons per minute, GPM), and “Head” refers to the pressure or height difference through which the fluid is moved (usually in feet). The constant 3960 is used to convert units to horsepower.
  2. Horsepower (HP):
    • Horsepower is a unit of power commonly used in various mechanical and electrical systems to quantify the rate at which work is done or energy is transferred.
    • 1 HP is equivalent to 746 watts or 550 foot-pounds per second.

WHP to HP Conversion Formula: To convert from Water Horsepower (WHP) to Horsepower (HP), you can use the following formula:

HP = WHP / 1.014


  • HP represents the equivalent power in horsepower.
  • WHP is the power in Water Horsepower that you want to convert.

The factor 1.014 is used for this conversion, taking into account the slight difference in the definition of horsepower for water (WHP) and the standard mechanical horsepower (HP).

The WHP to HP Calculator simplifies this conversion process, making it easy for engineers, fluid dynamics experts, and professionals working with hydraulic systems to assess and compare power outputs or requirements accurately. It plays a critical role in optimizing the performance and efficiency of water-related machinery and systems, such as pumps, water turbines, and hydraulic motors, by ensuring that power units are consistent and compatible across various components and calculations.