Pipe Sizing Calculator

Engineering-grade pipe sizing for Water, Steam, Natural Gas, and Oil/Viscous Liquids — based on Darcy-Weisbach, Weymouth, and fluid-mechanics fundamentals.

Flow Rate

Max Velocity (ft/s)

Pipe Material

Schedule / Type

Pipe Length (ft)

Water Temperature (°F)

Allowable Pressure Drop

Fittings / Equivalent Length (optional)

Steam Load (lbs/hr)

Steam Pressure (psig)

Max Velocity (ft/min)

Pipe Material

Schedule

Pipe Length (ft)

Allowable Pressure Drop (psi/100ft)

Flow Rate (SCFH)

Inlet Pressure (psig)

Allowable Pressure Drop

Specific Gravity (air=1.0)

Pipe Length (ft)

Flow Rate (GPM)

Specific Gravity

Viscosity

Pipe Material

Schedule

Pipe Length (ft)

Allowable Pressure Drop (psi/100ft)

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Pipe Sizing Calculator

Fittings / Equivalent Length (optional)

Recommended Pipe Size

Recommended Pipe Size

Recommended Pipe Size

Recommended Pipe Size

Fitting Type	Qty	NPS (in)