Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Fluid Mechanics
Darcy-Weisbach Pressure Drop Calculator
Calculates pressure drop along a pipe section using the Darcy-Weisbach equation. Used by engineers designing water supply, HVAC, and industrial piping systems to size pipes and pumps correctly.
Fill in the required fields to see your result.
Fluid Mechanics
Pump Power and Efficiency Calculator
Calculates the shaft power a pump must deliver to move fluid against a given head, accounting for pump efficiency. Used when selecting pumps for water supply, irrigation, HVAC, and industrial process systems.
Fill in the required fields to see your result.
Key differences
| Darcy-Weisbach Pressure Drop Calculator | Pump Power and Efficiency Calculator | |
|---|---|---|
| Category | Fluid Mechanics | Fluid Mechanics |
| Inputs required | 5 | 4 |
| Result | Pressure Drop (Pa) | Required Power (kW) |
| What it does | Calculates pressure drop along a pipe section using the Darcy-Weisbach equation. Used by engineers designing water supply, HVAC, and industrial piping systems to size pipes and pumps correctly. | Calculates the shaft power a pump must deliver to move fluid against a given head, accounting for pump efficiency. Used when selecting pumps for water supply, irrigation, HVAC, and industrial process systems. |