Hydraulic Diameter solver

length side a (m, ft) length side b (m, ft)

The calculator to calculate the hydraulic diameter of rectangular duct or tube.

Hydraulic Diameter formula

dh = 4 a b / (2 (a + b)) = 2 a b / (a + b)

where b = height/width of the duct (m, ft), a = width/height of the duct (m, ft).

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