Pipe pressure drop calculator for engineering pipe networks
Calculate pipe pressure drop, friction loss, velocity, fittings losses, and critical path results for water, glycol, oil, compressed air, and custom fluids directly in your browser.
What the pipe pressure drop calculator does
XPipe helps MEP and mechanical engineers model pipe systems quickly, review transparent pressure-loss calculations, and identify the governing route through the network.
Pipe pressure loss
Calculate section-by-section pressure drop from pipe size, flow, length, roughness, fittings, and equipment losses.
Critical path analysis
Rank branches and paths to find the controlling route for pump head and system pressure requirements.
Fluid properties
Use built-in fluid options or enter custom density and viscosity for project-specific calculations.
Engineering reports
Save projects to your account and export PDF reports with inputs, assumptions, and pressure drop results.
How to calculate pipe pressure drop
Build the network
Add pipe sections, branches, fittings, equipment, and flow paths for the system you want to analyze.
Set fluid and units
Choose SI or Imperial units, then select a fluid or enter custom engineering fluid properties.
Run the calculation
Review velocity, Reynolds number, friction loss, fitting loss, total pressure drop, and governing path.
Save or export
Store calculations in your CalculationX workspace and create a report for design documentation.