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# Water Horsepower Calculator

To Use the Water Horsepower Calculator, Select the term you want to find, enter the values, and click calculate button

## Water Horsepower Calculator

Water Horsepower Calculator is a mathematical tool that is used to calculate the horsepower of a water pump or the amount of power or energy necessary to move water at particular heights.

## What is meant by Water Horsepower?

The smallest amount of power needed to move water is referred to as water horsepower. It is the amount of electricity a pump would need if it were completely efficient.

In other words, the Water Horsepower (**WHP**) is a unit of power that represents the rate at which work is done to move water.

If the entire head force required to produce the water flow and the flow rate are known then water horsepower is calculated using the values.

## The formula of water Horsepower

To compute the water horsepower (**WHP**) using the below formula.

**WHP = H × Q / 3960 **

Where,

**H**= total head or pressure (in ft)**Q**= Total flow rate of water (in gallons per minute, simply say gpm)

## How to evaluate the WHP?

**Example 1:**

The flow rate of the water supply system of buildings is measured at **80 **gallons per minute and the total head or pressure is **30 **feet then the total water horsepower is?

**Solution:**

**Step 1: **Write the data from the above question.

Q = 80, H = 30, WHP =?

**Step 2:** Write the formula water Horsepower.

`WHP = (Q × H) / 3960`

**Step 3: **Now put the values in the above formula.

WHP = (80) × (30)/ 3960

WHP = 2400 / 3960

**WHP = 0.6666 HP**

**Example 2:**

The flow rate of water is measured at 100 gallons per minute (gpm) and the total head or pressure against which the water needs to pump is 50 feet then find the water horsepower.

**Solution:**

**Step 1: **Write the data from the above question.

Q = 100, H = 50, WHP =?

**Step 2: **Write the formula water Horsepower.

`WHP = (Q × H) / 3960`

**Step 3: **Now put the values in the above formula.

WHP = (100) × (50)/ 3960

WHP = 5000 / 3960

**WHP = 1.39 HP**