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Both calculators run independently — change the inputs on either side to compare results.

Pipe Sizing Calculator

Find the minimum required pipe diameter to keep fluid velocity within safe limits for a given flow rate. Use this when selecting pipe sizes for new installations or checking whether existing pipes can handle increased flow.

Flow Rate (L/min)

Maximum Velocity (m/s)

Safety Factor

Fill in the required fields to see your result.

Fluid Mechanics

Pump Power Calculator

Calculate the shaft power and motor input power needed to pump a fluid against a given head. Use this for selecting pump and motor sizes in water supply, irrigation, and industrial systems.

Flow Rate (m³/s)

Total Dynamic Head (m)

Fluid Density (kg/m³)

Pump Efficiency

Motor Efficiency

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Key differences

	Pipe Sizing Calculator	Pump Power Calculator
Category	Fluid Mechanics	Fluid Mechanics
Inputs required	3	5
Result	Minimum Pipe Diameter (mm)	Required Power (kW)
What it does	Find the minimum required pipe diameter to keep fluid velocity within safe limits for a given flow rate. Use this when selecting pipe sizes for new installations or checking whether existing pipes can handle increased flow.	Calculate the shaft power and motor input power needed to pump a fluid against a given head. Use this for selecting pump and motor sizes in water supply, irrigation, and industrial systems.