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FLUIDS

Hazen–Williams Calculator

Estimate water head loss in SI units.

Transparent calculationFormula and assumptions shown
01

Enter your values

02

Your result

Head loss6.865132m
FORMULA USEDhf = 10.67 L Q¹·⁸⁵²/(C¹·⁸⁵² d⁴·⁸⁷)
METHOD

How this calculation works

The calculator substitutes your values into the stated engineering relationship and evaluates the result using the displayed units. Change any input to recalculate instantly.

Important

This is an idealised engineering calculation. Confirm material properties, loading conditions and applicable design factors before specification or construction.