Enter the hose internal diameter, the dynamic water pressure, and hose length to determine the hose flow rate.

## Hose Flow Rate Formula

The following formula is used to calculate a hose flow rate.

Q = (1946.6 * D ^ 1.857 * (P/L) ) ^ .54

- Where Q is the volumetric flow rate in gallons per minute (GPM)
- D is the internal diameter of the hose
- P is the dynamic pressure of water
- L is the length of the hose

## Hose Flow Rate Definition

A hose flow rate is defined as the total volume of water or fluid that moves through a hose per unit of time. This is most often measured in gallons per minute.

## Hose Flow Rate Example

How to calculate a hose flow rate?

**First, determine the internal diameter.**Measure the inner diameter of the hose.

**Next, determine the length of the hose.**Measure the total length of the hose.

**Next, determine the dynamic pressure.**This is the dynamic pressure at the hose bib.

**Finally, calculate the hose flow rate.**Calculate the hose flow rate using the formula above.

## FAQ

**What is a hose flow rate?**

A hose flow rate is a measure the amount of water that moves through a hose opening per unit time.

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