Sprinkler Hydraulic Calculator

Calculate flow, pressure, and friction loss using Hazen-Williams formula.

K-Factor

Operating Pressure (PSI)

Or Enter Flow (GPM)

Enter pressure to calculate flow, or enter flow to calculate required pressure.

Pipe Size

C-Factor

Pipe Length (ft)

Pipe Flow (GPM)

Sprinkler Flow:

Q = K x sqrt(P)

Hazen-Williams:

pf = 4.52 x Q^1.85 / (C^1.85 x d^4.87)

Velocity:

V = 0.4085 x Q / d^2

Hydraulic Results