About us

Pressure-to-flow calculations should be inspectable.

PSI to GPM is an independent technical publishing project focused on practical water-flow estimation. We build tools that identify the physical system before choosing a formula, disclose unit conventions, and separate theoretical estimates from field measurements.

Our editorial method

Every calculator identifies its model, inputs, formula, applicability, and limitations. Safety-sensitive topics such as fire protection and pump selection include explicit professional-review guidance.

Corrections

If you find a numerical, editorial, or accessibility issue, contact us with the page URL and enough detail to reproduce it. We review substantive corrections and update affected formulas or explanations.