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.

Engineering Documentation Software

DocuEngine™ Ultimate | Free Offline Engineering Documentation Software DocuEngine Ultimate is a free, fully offline engineering software platform that runs entirely in your web browser. There is nothing to install, no account to create, and no server in the loop — open one HTML file, and you have a complete engineering documentation software suite for P&ID drafting, … Read more

Advanced Process & Thermodynamic Suite: 8 Free Process Engineering Calculators

Aienginear Advanced Process & Thermodynamic Suite v5.0.0 with eight process engineering calculators: Antoine, Rackett, Colebrook pressure drop, API RP 14E, ASME VIII-1, Beggs & Brill, DAK Z-factor and API 520

Free Aienginear process engineering calculator suite: Antoine and IAPWS vapour pressure, Rackett density, Colebrook pressure drop, API RP 14E erosional velocity, ASME VIII-1 shell and head thickness, Beggs & Brill two-phase flow, DAK gas Z-factor and API 520 relief valve sizing, with printable tables and worked examples.

Fluid Flow & Pipe Sizing Calculator: Pipe Size, Pressure Drop, Gas & Two-Phase Flow (2026)

Free Aienginear fluid flow and pipe sizing calculator: recommends the line size from velocity and pressure-gradient limits, with Darcy-Weisbach and Colebrook-White pressure drop, gas pipeline equations, compressible and two-phase flow, 3-K fittings, pump NPSH, slurry and API RP 14E erosion checks.