Enter the viscosity and density of a fluid and the density and diameter of a particle into the calculator to determine the object’s terminal velocity.

- Terminal Velocity Calculator
- Free Fall Velocity Calculator
- Drag Coefficient Calculator
- Impact Velocity Calculator

## Stokes’ Law Formula

The following equation is used to calculate the terminal velocity of an object.

v = g * d^2 * (P – p) / (18 * u)

- Where v is the terminal velocity
- g is the acceleration due to gravity
- d is the diameter of the particle
- P is the density of the particle
- p is the density of the fluid
- u is the viscosity of the fluid

## Stokes’ Law Definition

Stokes’ law is defined as the terminal velocity of a falling object through a specific fluid or medium.

## Stokes’ Law Example

How to calculate Stoke’s Law?

**First, determine the diameter of the particle.**Calculate the diameter of the particle.

**Next, determine the density of the particle.**Calculate the density of the particle.

**Next, determine the density of the fluid.**Calculate the density of the fluid.

**Next, determine the viscosity of fluid.**Calculate the viscosity of the fluid.

**Finally, calculate the terminal velocity.**Calculate the terminal velocity using Stokes’ Law.

## FAQ

**What is Stokes’ Law?**

Stokes’ law describes the terminal velocity an object can reach due to gravity and the properties of the particle and medium it’s moving through.

**How is Stokes’ Law Calculated?**

Stokes law is calculated using the properties of the particle and fluid with the formula above.