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
Convective Heat Transfer Calculator
Calculate convective heat transfer rate from a solid surface to a flowing fluid (or vice versa) using Newton's law of cooling. Use it to size heat exchangers, evaluate HVAC equipment, or estimate building heat loss.
Fill in the required fields to see your result.
Key differences
| Pump Power & Efficiency Calculator | Convective Heat Transfer Calculator | |
|---|---|---|
| Category | Engineering | Engineering |
| Inputs required | 5 | 5 |
| Result | Motor Power Required (kW) | Heat Transfer Rate (W) |
| 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 convective heat transfer rate from a solid surface to a flowing fluid (or vice versa) using Newton's law of cooling. Use it to size heat exchangers, evaluate HVAC equipment, or estimate building heat loss. |