# Wetted Perimeter Calculator

In hydraulics, the wetted perimeter is the length from one side of the stream to the other in a flow channel. Normally, wetted perimeter is denoted by Pw.

The formula to calculate wetted perimeter is given by:

where,
Pw = Wetted perimeter
A = Area of section flow

In the below online wetted perimeter calculator, enter the area of section flow and hydraulics radius in the input boxes and click calculate button to find the answer.

 Area of Section Flow (A): [m2] Hydraulics Radius (Rh): [m] Wetted Perimeter (Pw): [m]

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