Dynamic Viscosity Calculator


Calculating dynamic viscosity is crucial in various fields like fluid mechanics, engineering, and physics. A dynamic viscosity calculator simplifies this process by providing accurate results swiftly. In this article, we’ll discuss how to use a dynamic viscosity calculator efficiently, along with the formula and examples.

How to Use

Using a dynamic viscosity calculator is straightforward. Input the required values into the designated fields, such as shear stress and shear rate, and then click the “Calculate” button. The calculator will swiftly process the information and display the dynamic viscosity.


The formula for dynamic viscosity (µ) is:


  • µ is the dynamic viscosity (in units such as Pascal-seconds or Poise)
  • Shear Stress is the force applied tangentially to the surface of the fluid (in units like Newtons per square meter or Pascals)
  • Shear Rate is the rate of change of velocity along a direction perpendicular to the velocity vector (in reciprocal seconds or reciprocal time units)

Example Solve

Let’s consider an example where the shear stress is 50 N/m² and the shear rate is 10 s⁻¹. Using the formula mentioned above:

Thus, the dynamic viscosity in this example is 5 Pascal-seconds.


Q: What are the common units of dynamic viscosity?

A: Dynamic viscosity can be expressed in units such as Pascal-seconds (Pa·s), Poise (P), or centipoise (cP).

Q: Can dynamic viscosity be negative?

A: No, dynamic viscosity cannot be negative as it represents the resistance of a fluid to flow.

Q: Is dynamic viscosity affected by temperature?

A: Yes, dynamic viscosity generally decreases with an increase in temperature for most fluids.


Dynamic viscosity calculators provide a convenient means to determine the viscosity of fluids, aiding engineers, scientists, and researchers in various applications. By inputting the necessary parameters and utilizing the formula provided, users can swiftly obtain accurate results.

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