Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Mechanical
Pump Head and Power Calculator
Calculate the hydraulic power required to drive a pump based on flow rate, total head (static plus friction), fluid density, and pump efficiency. Use this when selecting a pump motor or auditing energy consumption in a piping system.
Fill in the required fields to see your result.
Mechanical
Torque and Power Calculator
Convert between torque, rotational speed, and mechanical power for motors, engines, and drivetrain components. Use it when sizing a motor or verifying shaft power output at a given RPM and efficiency.
Fill in the required fields to see your result.
Key differences
| Pump Head and Power Calculator | Torque and Power Calculator | |
|---|---|---|
| Category | Mechanical | Mechanical |
| Inputs required | 5 | 4 |
| Result | Required Power (W) | Result (kW) |
| What it does | Calculate the hydraulic power required to drive a pump based on flow rate, total head (static plus friction), fluid density, and pump efficiency. Use this when selecting a pump motor or auditing energy consumption in a piping system. | Convert between torque, rotational speed, and mechanical power for motors, engines, and drivetrain components. Use it when sizing a motor or verifying shaft power output at a given RPM and efficiency. |