Kinematic Viscosity to Dynamic Viscosity Converter

In fluid dynamics and chemical engineering, viscosity is the measure of a fluid's resistance to deformation. However, confusingly, it comes in two distinct forms: Kinematic Viscosity (how a fluid flows under gravity) and Dynamic Viscosity (how a fluid resists force). Lab reports often provide Kinematic Viscosity in centistokes (cSt), while simulation software and pump sizing calculations require Dynamic Viscosity in centipoise (cP) or Pascal-seconds (Pa·s).

You cannot convert between these two without knowing the fluid's Density. This relationship is critical: a dense fluid like mercury has high dynamic viscosity but lower kinematic viscosity compared to lighter oils. This tool simplifies the conversion and manages the tricky order-of-magnitude errors associated with unit prefixes (like converting m²/s to cSt).

Dynamic viscosity is the product of kinematic viscosity and the fluid's density.

Where:

• μ (Mu) = Dynamic Viscosity (e.g., Pa·s, cP)
• ν (Nu) = Kinematic Viscosity (e.g., m²/s, cSt)
• ρ (Rho) = Density (e.g., kg/m³)

Unit Consistency Check:
If ν is in cSt and ρ is in g/cm³ (Specific Gravity), then μ is directly in cP.