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

Design Margin (%) — optional

Service & Criteria

Service Type

Pipe Selection

Material (MOC)

Pipe Schedule

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

Fill in the inputs on the left and results will appear here automatically.

Result

Suggested Pipe Size

—

Sizing flow (incl. margin & fraction)—

Internal diameter—

Actual velocity—

Recommended velocity—

Reynolds number—

Flow regime—

Friction factor (Darcy)—

Pressure drop (informational)—

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