# Stokes Law Calculators

Calculate Terminal Velocity

#### V=[g×D^2×(d_p-d_m)]/[18×V] V = Terminal Velocity      D = Diameter Of a Particle g = Acceleration Of Gravity      v = Viscosity Of Medium dp = Density Of Particle      dm = Density Of Medium

Acceleration Of Gravity:
Diameter Of a Particle:
Density Of Particle:
Density Of Medium:
Viscosity Of Medium:

Result:

Terminal Velocity:
Meter/Second

Calculate Acceleration Of Gravity

#### g=[18×v×V]/[D^2×(d_p-d_m)] g = Acceleration Of Gravity      V = Terminal Velocity v = Viscosity Of Medium      D = Diameter Of a Particle dp = Density Of Particle     dm = Density Of Medium

Terminal Velocity:
Diameter Of a Particle:
Density Of Particle:
Density Of Medium:
<
Viscosity Of Medium:

Result:

Acceleration Of Gravity:
Meter/Second2

Calculate Diameter Of a Particle

#### D=√[18×v×V]/[g×(d_p-d_m)] D = Diameter Of a Particle      V = Terminal Velocity v = Viscosity Of Medium      g = Acceleration Of Gravity dp = Density Of Particle     dm = Density Of Medium

Viscosity Of Medium:
Terminal Velocity:
Acceleration Of Gravity:
Density Of Particle:
Density Of Medium:

Result:

Diameter Of a Particle:
Meter

Calculate Density Of Medium

#### d_m=d_p-[18×v×V]/[g×D^2] dm = Density Of Medium      dp = Density Of Particle V = Terminal Velocity      v = Viscosity Of Medium D = Diameter Of a Particle      g = Acceleration Of Gravity

Density Of Particle:
Viscosity Of Medium:
Terminal Velocity:
Acceleration Of Gravity:
Diameter Of a Particle:

Result:

Density Of Medium:
Gram/Meter3

Calculate Density Of Particle

#### d_p=[18×v×V]/[g×D^2]+d_m dp = Density Of Particle      dm = Density Of Medium V = Terminal Velocity      v = Viscosity Of Medium D = Diameter Of a Particle      g = Acceleration Of Gravity

Density Of Medium:
Viscosity Of Medium:
Terminal Velocity:
Acceleration Of Gravity:
Diameter Of a Particle:

Result:

Density Of Particle:
Gram/Meter3

Calculate Viscosity Of Medium

#### V=[g×D^2×(d_p-d_m)]/[18×V] v = Viscosity Of Medium      dp = Density Of Particle dm = Density Of Medium      D = Diameter Of a Particle g = Acceleration Of Gravity      V = Terminal Velocity

Acceleration Of Gravity:
Diameter Of a Particle:
Density Of Particle:
Density Of Medium:
Terminal Velocity:

Result:

Viscosity Of Medium:
Gram/Meter-Second

Stokes Law Calculators

Stokes law calculation: terminal velocity, acceleration of gravity, particle size, medium density, particle density, medium viscosity

Calculation of terminal velocity, acceleration of gravity, particle size, medium density, particle density, and medium viscosity.

Select the corresponding cell and enter the value, and click "Calculate". The results will be displayed.

Example of use
Known data: acceleration of gravity; particle size; particle density; medium density; medium viscosity, find the terminal velocity.

Input data: acceleration of gravity: 2 m/s²; particle size: 1 m; particle density: 2 g/m3; medium density: 0.5 g/m3; medium viscosity: 0.9 g/m-s, click "Calculate" ,Show results.

Output result: terminal velocity is 0.1851852 m/s.

Precautions
The units of acceleration of gravity, particle size, particle density, medium density, and medium viscosity can be checked. Click the arrow of the check box to select the corresponding unit.

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