Venturi Meter Calculator

Calculate flow rate from venturi meter differential pressure reading using Bernoulli's principle.

Upstream pipe diameter.
mm
Venturi throat diameter.
mm
Measured pressure difference between upstream and throat.
kPa
Density of the fluid. Water: 998 kg/m³.
kg/m³
Venturi: 0.95-0.99. Typical: 0.98.

Results

Volume Flow Rate-L/s
Mass Flow Rate-kg/s
Pipe Velocity-m/s
Throat Velocity-m/s
Beta Ratio-
References: ISO 5167 — Measurement of Fluid Flow; ASME MFC-3M