Pipe Pressure Drop Calculator: Liquid, Gas, Steam, Slurry & Two-Phase (2026)

Aienginear Pipe Pressure Drop Calculator graphic showing a pipe with a valve, the falling pressure line from friction and fitting losses, the Darcy-Weisbach equation and a Moody chart inset

Free pipe pressure drop calculator for liquid, gas, steam, slurry and two-phase flow. Darcy-Weisbach, Colebrook-White, fittings, MMSCFD, pump power, worked examples and printable tables.

FlowStack: Process & Hydraulics Calculators (Pipe Sizing, Pressure Drop, Pumps & NPSH)

FlowStack process and hydraulics calculators by Aienginear: properties, line sizing, pressure drop, pumps, valves and meters

FlowStack by Aienginear: 13 free process and hydraulics calculators for line sizing, Darcy-Weisbach pressure drop, pump NPSH, control valves (IEC 60534) and ISO 5167 flow meters, with a quick line and NPSH checker.

Free Engineering Calculators: 33 Process, Piping & Mechanical Tools

Free engineering calculators by Aienginear: 33 process, piping, pressure integrity and energy tools

33 free engineering calculators from Aienginear for pipe sizing, pressure drop, PSV relief, ASME VIII vessels, control valves, flow meters, flange torque and hydrotests. Printable, standards-referenced, no signup.