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Pump NPSH Calculator

Calculates the Net Positive Suction Head available (NPSHa) for a centrifugal pump installation to verify cavitation will not occur. Use it whenever sizing pump suction lines or repositioning a pump relative to its fluid source.

Atmospheric Pressure (Pa)

Vapor Pressure at Pumping Temperature (Pa)

Static Suction Head (m)

Suction Line Friction Losses (m)

Fluid Density (kg/m³)

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Chemical Engineering

Pump Power Calculator

Calculate the shaft power required to pump a fluid against a given head, accounting for flow rate, fluid density, and pump efficiency. Use it when sizing motors and selecting pumps for water, oil, or chemical service.

Volumetric Flow Rate (m³/s)

Total Head (m)

Pump Efficiency

Fluid Density (kg/m³)

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Key differences

	Pump NPSH Calculator	Pump Power Calculator
Category	Chemical Engineering	Chemical Engineering
Inputs required	5	4
Result	NPSH Available (m)	Power Requirement (kW)
What it does	Calculates the Net Positive Suction Head available (NPSHa) for a centrifugal pump installation to verify cavitation will not occur. Use it whenever sizing pump suction lines or repositioning a pump relative to its fluid source.	Calculate the shaft power required to pump a fluid against a given head, accounting for flow rate, fluid density, and pump efficiency. Use it when sizing motors and selecting pumps for water, oil, or chemical service.