Head Loss Calculator
Calculate head loss (pressure drop) in pipes. Enter velocity, pipe dimensions, and friction factor.
ft/s
inches
feet
f
Head Loss
—feet of head
PSI—
kPa—
Darcy-Weisbach Equation
h_f = f × (L/D) × (V²/2g). Where f = friction factor, L = pipe length, D = pipe diameter, V = velocity, g = 32.174 ft/s².