Free
Rating summary
About
Hydro Calcs is an offline calculator for Milbar Hydro-Test, Inc. It figures pig time, friction loss, fill time, test water, pressure-pump time, elevation, and horsepower for a hydrostatic test. The app has no account. Results stay on the device.
Show more
What's New in Hydro Calcs
1.1
October 7, 2026
Lead numbers show their units. Fill shows the total gallons first, then the hours still left.
