Line Sizing Calculator

For educational use only — not for projects without review by a qualified professional engineer. The author takes no liability.

Line Sizing Calculator

Enter a flow rate and the tool finds the actual velocity and suggests a standard pipe size that meets velocity and pressure-drop criteria — Crane TP-410 / NORSOK P-001, ASME B36.10 pipe schedules.

Fluid Properties

Fluid Phase

Fluid Preset

Density (kg/m³) — optional

Viscosity (cP) — optional

Density & viscosity are optional. With a volumetric flow you can leave them blank to get velocity and a size suggestion only — Reynolds number, flow regime and pressure drop need both.

Flow Conditions

Flow Rate

Service & Criteria

Service Type

Pipe Selection

Material (MOC)

Pipe Schedule

Current Pipe Size — optional, to compare what you already have

Result

Suggested Pipe Size

—

Volumetric flow—

Internal diameter—

Velocity in suggested size—

Recommended velocity range—

Reynolds number—

Flow regime—

Friction factor (Darcy)—

Pressure drop (informational)—

Longitudinal pipe section — ASME B36.10 dimensions. Enter values and calculate to update diagram.

To see the guide for this calculator, refer to the article below:

Reference: Line Sizing Calculator Methodology Article

Line Sizing Calculator

Result

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