Quickly determine the specific speed of any pump (centrifugal, axial, mixed-flow) using our online calculator. Understand how specific speed influences pump design, efficiency, and application suitability, helping engineers and designers make informed decisions for optimal fluid handling systems.
Formula:
The specific speed (Ns) is calculated using the following formula:
Ns = N * √Q / H3/4
Where:
- Ns = Specific Speed (dimensionless, based on US Customary Units)
- N = Rotational Speed (RPM - Revolutions Per Minute)
- Q = Flow Rate (GPM - US Gallons Per Minute)
- H = Head (ft - feet of liquid)
Note: This calculator uses US Customary Units. Specific speed can be interpreted to suggest the best pump type for the application.