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# Kinematic Viscosity

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Equation / Last modified by KurtHeckman on 2018/04/30 13:25
`nu = `

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Rating

ID

DavidC.Kinematic Viscosity

UUID

752d290c-4465-11e3-a47b-bc764e049c3d

The **Kinematic Viscosity (ν) **calculator computes kinematic viscosity (ν) based on the ratio of viscosity (μ) and the density of a fluid (ρ).

**INSTRUCTIONS**: Choose units and enter the following:

- (
**μ**) viscosity of a fluid - (
**ρ**) density of a fluid

**Kinematic Viscosity (ν)**: The calculator returns the kinematic viscosity in m²/sec.

#### The Math / Science

Kinematic viscosity is also known as momentum diffusivity. Kinematic Viscosity (ν) is the ratio of dynamic viscosity (μ) and the density of a fluid (ρ). Since, μ is in units of (kg/m²)/ sec and ρ is kg/m³, the Kinematic Viscosity is expressed in units of m²/sec. The formula for kinematic velocity is:

υ = μ / ρ

where:

- υ is the kinematic viscosity
- μ is the dynamic viscosity
- ρ is the density