We provide you these tools so you can do unit conversions easily of air-flow or pressure. Enter data in the first box and choose the source and destination units to see the equivalent result.
You can also calculate the rectangular equivalent of a circular diameter of sides "a" and "b", either by area or loss (equivalent diameter according to Huesbsher equation).
If you need a fan and you know the work point, you can make the selection with our free Fanware software. If you only know the constructve form of the fan, you can also find it in the search by series: