Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Plumbing
Pipe Flow Velocity Calculator
Calculates water velocity (in ft/s) inside a pipe from flow rate and pipe diameter, then checks whether it falls within code-acceptable limits for the selected application. Use it to avoid erosion, noise, or insufficient flow.
Fill in the required fields to see your result.
Plumbing
Pipe Friction Loss Calculator
Calculates pressure loss (in PSI) due to pipe friction using the Hazen-Williams equation, given flow rate, pipe length, diameter, and material. Ideal for plumbers and engineers sizing water supply lines.
Fill in the required fields to see your result.
Key differences
| Pipe Flow Velocity Calculator | Pipe Friction Loss Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 2 | 4 |
| Result | Flow Velocity (ft/s) | Pressure Loss (PSI) |
| What it does | Calculates water velocity (in ft/s) inside a pipe from flow rate and pipe diameter, then checks whether it falls within code-acceptable limits for the selected application. Use it to avoid erosion, noise, or insufficient flow. | Calculates pressure loss (in PSI) due to pipe friction using the Hazen-Williams equation, given flow rate, pipe length, diameter, and material. Ideal for plumbers and engineers sizing water supply lines. |