Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Plumbing
Pipe Flow Rate Calculator
Calculates the volumetric flow rate of water through a pipe in gallons per minute. Use it when sizing pumps, irrigation lines, or plumbing systems where you know pipe diameter and water velocity.
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 Rate Calculator | Pipe Friction Loss Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 2 | 4 |
| Result | Flow Rate (GPM) | Pressure Loss (PSI) |
| What it does | Calculates the volumetric flow rate of water through a pipe in gallons per minute. Use it when sizing pumps, irrigation lines, or plumbing systems where you know pipe diameter and water velocity. | 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. |