Rectangular Weir Flow Rate Calculator

Online calculator for measuring the water flow rate of rectangle shaped weir. The measurement is based on Bernoullis equation.

Rectangular Weir Flow Rate Calculation

Head on the Weir (h) = m
Width of the Weir (b) = m
Discharge Constant (Cd) =
Flow Rate = m³/s
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Formula The Bernoulli's equation is as follows q = 2/3 ×Cd ×b ×(2g)1/2 ×h3/2 Where, q = Flow Rate Cd = Discharge Constant b = Width of the Weir g = gravity (9.81 m/s²) h = Head on the Weir

Free rectangular weir calculator for exact measurement of flow rate. Simple and easy to use.

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