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Pipe Pressure Drop Calculator

Calculate frictional pressure drop in a pipe using the Darcy-Weisbach equation, given friction factor, length, diameter, and fluid velocity. Use it for pump sizing, HVAC duct design, and fluid distribution system layout.

Friction Factor

Pipe Length (m)

Pipe Diameter (m)

Flow Velocity (m/s)

Engineering

Pipe Flow Pressure Drop Calculator

Calculate the pressure drop along a pipe section using the Darcy-Weisbach equation. Use this when designing water distribution systems, HVAC ductwork, or any piping network where flow resistance must be quantified.

Flow Rate (m³/s)

Pipe Diameter (m)

Pipe Length (m)

Fluid Density (kg/m³)

Key differences

	Pipe Pressure Drop Calculator	Pipe Flow Pressure Drop Calculator
Category	Engineering	Engineering
Inputs required	4	4
Result	Pressure Drop (Pa)	Pressure Drop (Pa)
What it does	Calculate frictional pressure drop in a pipe using the Darcy-Weisbach equation, given friction factor, length, diameter, and fluid velocity. Use it for pump sizing, HVAC duct design, and fluid distribution system layout.	Calculate the pressure drop along a pipe section using the Darcy-Weisbach equation. Use this when designing water distribution systems, HVAC ductwork, or any piping network where flow resistance must be quantified.