Engineering Calculators

Practical calculators for tank mixing and petroleum applications. Enter your values and results update instantly — no login required.

Calculators for sizing and evaluating side-entry tank mixers. Results are engineering estimates — consult Northeast Controls for final mixer selection.

Tank Volume

Calculate the volume of a vertical cylindrical tank.

Tank Diameter

Liquid Height

Propeller Tip Speed

Calculate the tip speed of a mixer propeller.

Propeller Diameter

Shaft Speed

RPM

Mixing Reynolds Number

Determine the flow regime in a mixed tank (laminar, transitional, or turbulent).

Fluid Density

lb/ft³

Dynamic Viscosity

Propeller Diameter

Shaft Speed

RPM

Blend Time Estimate

Estimate the time to achieve uniform blending in a tank (turbulent regime).

Tank Volume

US Gal

Mixer Power

Fluid Density

lb/ft³

Mixer Power (Power Number)

Calculate shaft power using the dimensionless Power Number (Np).

Power Number (Np)

Fluid Density

lb/ft³

Shaft Speed

RPM

Propeller Diameter

Disclaimer: These calculators provide engineering estimates for reference purposes only. Results should be verified by a qualified engineer before use in design or procurement decisions. Northeast Controls Inc. assumes no liability for errors or omissions.