Coefficient of Discharge Calculator
Free calculate coefficient of discharge (cd) for flow measurement devices from actual and theoretical flow rates.
Input Parameters
Or calculate from device parameters
Results
Enter flow rates to calculate coefficient
Coefficient of Discharge
Formula
Cd = Qactual / Qtheoretical
Ratio of actual to theoretical flow rate
Typical Values
- • Sharp-edged orifice: 0.6-0.65
- • Rounded orifice: 0.95-0.99
- • Venturi meter: 0.95-0.98
- • Weir: 0.6-0.8