dP/100 is a pressure drop calculator per 100 length units. Inputs consist of density, viscosity, flow rate, elevation, diameter, and roughness. Output is pressure drop over specified length or vis-versa. Calculations can be performed for liquid or vapor phase. Currently, the default units are US but individual units may be altered to metric.

Note that the application is for general use only and is not responsible for errors or omission, misuse of the app, or bugs in the code.