basic

Bernoulli Orifice Flow Discharge Calculator

Q = C_d·A·√(2gh) — volumetric flow through an orifice.

Calculates volumetric flow rate through a circular orifice using Bernoulli's equation with a discharge coefficient, head pressure, and orifice diameter.

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Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

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Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Q = C_d × A × √(2 × g × h); A = π × d² / 4

In depth

Calculates volumetric flow rate through a circular orifice using Bernoulli's equation with a discharge coefficient, head pressure, and orifice diameter.