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.

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.