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Both calculators run independently — change the inputs on either side to compare results.
Engineering
Pipe Flow & Pressure Drop Calculator
Calculates pressure drop along a pipe using the Hazen-Williams equation, accounting for pipe material, flow rate, diameter, length, and elevation change. Use it to size water distribution pipes, fire suppression systems, and irrigation lines.
Fill in the required fields to see your result.
Engineering
Pipe Pressure Drop Calculator
Calculate frictional pressure drop in a pipe using the Darcy-Weisbach equation, given friction factor, length, diameter, and fluid velocity. Use it for pump sizing, HVAC duct design, and fluid distribution system layout.
Fill in the required fields to see your result.
Key differences
| Pipe Flow & Pressure Drop Calculator | Pipe Pressure Drop Calculator | |
|---|---|---|
| Category | Engineering | Engineering |
| Inputs required | 5 | 5 |
| Result | Pressure Drop (psi) | Pressure Drop (Pa) |
| What it does | Calculates pressure drop along a pipe using the Hazen-Williams equation, accounting for pipe material, flow rate, diameter, length, and elevation change. Use it to size water distribution pipes, fire suppression systems, and irrigation lines. | Calculate frictional pressure drop in a pipe using the Darcy-Weisbach equation, given friction factor, length, diameter, and fluid velocity. Use it for pump sizing, HVAC duct design, and fluid distribution system layout. |