How accurate are these calculations?

Formulas adhere strictly to industry engineering and trade handbook standards. Always allow safety margins for critical real-world installations.

Does this tool transmit any personal or project data?

No. All calculations run strictly client-side inside your browser. No data ever leaves your computer.

Is my data uploaded anywhere?

No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.

Does it work on a phone?

Yes. The layout adapts to small screens and needs no app or signup.

Orifice Plate Differential Pressure Flow Calculator

Calculate fluid volumetric flow rate (GPM), beta ratio, permanent pressure loss, and line velocity through an orifice restriction plate.

100% free
Private in browser
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Internal Pipe Diameter D (Inches)

Orifice Bore Diameter d (Inches)

Measured Differential Head (inches of water - in. w.g.)

Fluid Specific Gravity SG (Water = 1.0)

Calculated Flow Rate (GPM)

101

Bore Beta Ratio (d / D)

0.5

Permanent Net Head Loss (in. w.g.)

37.5

Pipe Stream Velocity (Feet Per Second)

2.6

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About Orifice Plate Differential Pressure Flow Calculator

Calculate fluid volumetric flow rate (GPM), beta ratio, permanent pressure loss, and line velocity through an orifice restriction plate. You get Calculated Flow Rate, Bore Beta Ratio and Permanent Net Head Loss straight away. Everything runs in your browser, so your data never leaves your device.

How to use Orifice Plate Differential Pressure Flow Calculator

Enter your specific project and environment input parameters
Review the computed values, conversions, and ratings in real-time
Adjust variables to simulate different scenarios and tolerances

Key features

Instant dynamic client-side calculations
Interactive sliders and numeric inputs
Industrial and engineering formulas validated against standards
100% private and offline in-browser execution

Frequently asked questions

How accurate are these calculations?: Formulas adhere strictly to industry engineering and trade handbook standards. Always allow safety margins for critical real-world installations.
Does this tool transmit any personal or project data?: No. All calculations run strictly client-side inside your browser. No data ever leaves your computer.
What does the Orifice Plate Differential Pressure Flow Calculator give me?: It works out Calculated Flow Rate, Bore Beta Ratio, Permanent Net Head Loss and Pipe Stream Velocity, updating live as you change the inputs.
Is my data uploaded anywhere?: No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.
Does it work on a phone?: Yes. The layout adapts to small screens and needs no app or signup.

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