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Pipe Pressure Drop (water)

Darcy-Weisbach pressure drop and head loss for water flow in a circular pipe, with Colebrook-White friction.

Flow & pipe

L/s
mm
m

Straight run only — excludes fittings

Material & fluid

mm
kg/m³

Water ≈ 999.7 @10 °C, 998.2 @20 °C

Pa·s

Water ≈ 0.0013059 @10 °C, 0.0010016 @20 °C

Enter the flow rate
ensign.software · 28 October 2026The Ensign Toolbox