Enter the flow rate, dynamic head, specific gravity, and efficiency into the calculator to determine the brake horsepower.

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## Brake Horsepower Formula

The following formula is used to calculate a brake horsepower of a centrifugal pump.

BHP = Q * DH * SG / 3960 * E

- Where BHP is the brake horsepower
- Q is the flow rate (gallons/min)
- DH is the total dynamic head (ft)
- SG is the specific gravity of the fluid
- E is the efficiency (%)

To calculate brake horsepower, multiply the flow rate by the head and specific gravity, divide by 3960, the multiply by the efficiency.

## Brake Horsepower Definition

Brake horsepower is the total amount of horsepower or energy required to overcome the force of breaking in a centrifugal pump.

## Brake Horsepower Example

How to calculate brake horsepower?

**First, determine the flow rate.**Measure the flow rate of the fluid moved by the pump.

**Next, determine the total dynamic head.**Measure the total dynamic head.

**Next, determine the specific gravity.**Calculate the specific gravity of the fluid.

**Next, determine the pump efficiency.**Calculate the efficiency of the pump.

**Finally, calculate the brake horsepower.**Calculate the brake horsepower using the formula above.

## FAQ

**What is Brake Horsepower?**

The brake horsepower of an engine is the total power required to overcome the force of braking. In the case above, this is for a centrifugal pump.

**How is brake horsepower calculated?**

Brake horsepower is calculated using the formula above with the necessary information.