Brake Horsepower Calculation

I want to calculate :
Water Horsepower(WHP) Flow Rate or Discharge(Q) Total Head(H) Pump Efficiency(n)

 

Flow Rate or Discharge(Q):		gpm
Total Head(H):		ft
Pump Efficiency(n):
Water Horsepower(WHP):		HP

 

  

The calculator can find Water Horsepower, flow rate, total head or pump efficiency as per selection and given appropriate values using following formula:

Formula

Water Horsepower (WHP) = (Q x H x 100)/ (3960 x n)

Where,

WHP = Water Horsepower,

Q = Flow Rate or Discharge,

H = Total Head.

n = Pump Efficiency.