Pressure Loss Water Pipe Hydraulic Calculator

Inside diameter of pipe, mm =
Water consumption, l/s =
Length of pipe, m =

Material of the pipeline:

- not selected
- new steel or cast-iron
- not new steel or cast-iron
- concrete
- plastic
- glass

Loss of pressure, bar =

With this online calculator you can calculate loss of pressure of the water pipe.


dP = f(d, q, l, k) - empirical formula

dP - loss of pressure
d - inside diameter of pipe
q - water consumption
l - length of pipe
k - pipe type factor

Pressure Loss Water Pipe

Pressure loss is energy loss and not only is downstream pressure lowered, but flow, and flow velocity are reduced as well.