Use this engineering calculation for a transparent preliminary estimate or independent arithmetic check when geometry, materials, loads, operating conditions, and units are defined consistently.

Density Kg Per M3 (kg/m³)

Required number input.

Gravity Meters Per Second Squared (m/s²)

Required number input.

Flow Cubic Meters Per Second (m³/s)

Required number input.

Net Head Meters (m)

Required number input.

Efficiency

Required number input.

Hydroelectric output power ρgQHη from fluid density, flow, net head and total turbine-generator efficiency. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Electric Watts (W)

The resulting electric watts returned as a number.

• Fan, pump, turbine, and propeller performance varies with speed, flow, head, density, efficiency map, cavitation margin, installation, control, and off-design operation. Similarity or ideal-power equations do not replace manufacturer curves.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check assumptions against drawings, measurements, current material data, and the applicable design code. Apply required load combinations and safety factors, then obtain qualified review and testing for consequential designs.

• Wind Turbine Power

  Idealized electrical wind-turbine power ½ρAv³Cpη from air density, swept area, wind speed, power coefficient and drivetrain efficiency.

• Bernoulli Total Head

  Total ideal-flow head as elevation plus pressure head and velocity head; excludes friction and pump terms.

• Pump Efficiency

  Pump hydraulic efficiency from hydraulic output power divided by shaft input power.