Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Engineering
Pump Power & Efficiency Calculator
Find the shaft power (kW) needed to drive a pump given flow rate, head, fluid density, and combined pump-motor efficiency. Use it when selecting motors or verifying energy consumption for water supply, HVAC, or process systems.
Fill in the required fields to see your result.
Engineering
Pipe Flow Pressure Drop Calculator
Calculate the pressure drop along a pipe section using the Darcy-Weisbach equation. Use this when designing water distribution systems, HVAC ductwork, or any piping network where flow resistance must be quantified.
Fill in the required fields to see your result.
Key differences
| Pump Power & Efficiency Calculator | Pipe Flow Pressure Drop Calculator | |
|---|---|---|
| Category | Engineering | Engineering |
| Inputs required | 5 | 4 |
| Result | Motor Power Required (kW) | Pressure Drop (Pa) |
| What it does | Find the shaft power (kW) needed to drive a pump given flow rate, head, fluid density, and combined pump-motor efficiency. Use it when selecting motors or verifying energy consumption for water supply, HVAC, or process systems. | Calculate the pressure drop along a pipe section using the Darcy-Weisbach equation. Use this when designing water distribution systems, HVAC ductwork, or any piping network where flow resistance must be quantified. |