# Formula for water pressure, flow and power

by cens
Tags: flow, formula, power, pressure, water
 Sci Advisor P: 5,095 $$P = p*\dot{V}$$ Where: $$P$$ is the power required $$p$$ is the pressure required $$\dot{V}$$ is the volumetric flow rate Make sure your units are consistent, i.e. use the standard units, m, sec, N or Lbf, ft, s. If you are pumping water and need it quick you can use this too: $$HP = \frac{\tex{psi}*\tex{GPM}}{1714}$$ Where: $$HP$$ is the power in horesepower $$psi$$ is the pumping pressure in psi(g) $$GPM$$ is the flow rate in gallons per minute