Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Plumbing
Water Pressure Loss Calculator
Calculates friction-induced pressure drop along a water pipe using the Hazen-Williams equation. Use it when designing irrigation systems, fire suppression lines, or building water supply networks where adequate pressure at the endpoint matters.
Fill in the required fields to see your result.
Plumbing
Water Pressure Drop Calculator
Calculates the residual water pressure (PSI) at the end of a piping run after accounting for elevation changes, pipe friction loss, and fittings. Use it to verify adequate pressure reaches the most remote fixture.
Fill in the required fields to see your result.
Key differences
| Water Pressure Loss Calculator | Water Pressure Drop Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 3 | 5 |
| Result | Pressure Loss (PSI) | Available Pressure (PSI) |
| What it does | Calculates friction-induced pressure drop along a water pipe using the Hazen-Williams equation. Use it when designing irrigation systems, fire suppression lines, or building water supply networks where adequate pressure at the endpoint matters. | Calculates the residual water pressure (PSI) at the end of a piping run after accounting for elevation changes, pipe friction loss, and fittings. Use it to verify adequate pressure reaches the most remote fixture. |