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Pipe Pressure Drop Calculator

Compute pressure drop across a straight pipe section using the Darcy-Weisbach equation. Used by engineers to size pipes and check whether pumps can overcome system resistance.

Pipe Length (m)

Pipe Internal Diameter (m)

Flow Velocity (m/s)

Fluid Density (kg/m³)

Fill in the required fields to see your result.

Chemical Engineering

Pipe Pressure Drop Calculator

Compute the friction term f·(L/D)·(v²/2) from the Darcy-Weisbach equation — the specific energy loss per unit mass of fluid flowing through a straight pipe. Multiply by fluid density to get pressure drop in Pa, or divide by g for head loss in metres.

Friction Factor

Pipe Length (m)

Pipe Diameter (m)

Fluid Velocity (m/s)

Fill in the required fields to see your result.

Key differences

	Pipe Pressure Drop Calculator	Pipe Pressure Drop Calculator
Category	Chemical Engineering	Chemical Engineering
Inputs required	4	4
Result	Pressure Drop (kPa)	Pressure Drop (m)
What it does	Compute pressure drop across a straight pipe section using the Darcy-Weisbach equation. Used by engineers to size pipes and check whether pumps can overcome system resistance.	Compute the friction term f·(L/D)·(v²/2) from the Darcy-Weisbach equation — the specific energy loss per unit mass of fluid flowing through a straight pipe. Multiply by fluid density to get pressure drop in Pa, or divide by g for head loss in metres.