Orifice Flow Calculator

Calculate flow through an orifice using discharge coefficient

Inputs

Discharge Coefficient Cd

Orifice Diameter (m)

Head Difference Δh (m)

Enter values to see results

Calculate flow rate from velocity and pipe area (Q = A × v)

Calculate flow velocity from flow rate and pipe diameter

Calculate internal cross-sectional area of a pipe

Calculate Reynolds number to determine laminar or turbulent flow