stokes' law calculator

➤ calculate terminal velocity (fall velocity or settling velocity)
➤ calculate acceleration due to gravity
➤ calculate particle diameter
➤ calculate the density of a medium
➤ calculate particle density
➤ calculate media viscosity

calculate terminal velocity

`V=[g×D^2×(d_p-d_m)]/[18×V]`
v = terminal velocity d = particle diameter
g = acceleration due to gravity v = viscosity of medium
dp = particle density dm = medium density

enter a value:

acceleration due to gravity:
particle diameter:
particle density:
media density:
medium viscosity:

calculation result:

terminal speed:
Meter/Second

calculate acceleration due to gravity

`g=[18×v×V]/[D^2×(d_p-d_m)]`
g = acceleration due to gravity v = terminal velocity
v = medium viscosity d = particle diameter
dp = particle density dm = medium density

enter a value:

terminal speed:
particle diameter:
particle density:
media density:
<
medium viscosity:

calculation result:

acceleration due to gravity:
Meter/Second2

calculate particle diameter

`D=√[18×v×V]/[g×(d_p-d_m)]`
d = particle diameter v = terminal velocity
v = viscosity of medium g = acceleration due to gravity
dp = particle density dm = medium density

enter a value:

medium viscosity:
terminal speed:
acceleration due to gravity:
particle density:
media density:

calculation result:

particle diameter:
Meter

calculate the density of a medium

`d_m=d_p-[18×v×V]/[g×D^2]`
dm = medium density dp = particle density
v = terminal velocity v = medium viscosity
d = particle diameter g = acceleration due to gravity

enter a value:

particle density:
medium viscosity:
terminal speed:
acceleration due to gravity:
particle diameter:

calculation result:

media density:
Gram/Meter3

calculate the density of particles

`d_p=[18×v×V]/[g×D^2]+d_m`
dp = particle density dm = medium density
v = terminal velocity v = medium viscosity
d = particle diameter g = acceleration due to gravity

enter a value:

media density:
medium viscosity:
terminal speed:
acceleration due to gravity:
particle diameter:

calculation result:

particle density:
Gram/Meter3

calculate media viscosity

`V=[g×D^2×(d_p-d_m)]/[18×V]`
v = medium viscosity dp = particle density
dm = medium density d = particle diameter
g = acceleration due to gravity v = terminal velocity

enter a value:

acceleration due to gravity:
particle diameter:
particle density:
media density:
terminal speed:

calculation result:

medium viscosity:
Gram/Meter-Second
stokes' law calculator

stokes' law calculation: terminal velocity, gravitational acceleration, particle size, medium density, particle density, medium viscosity

calculation of terminal velocity, gravitational acceleration, particle size, medium density, particle density and medium viscosity.

select the appropriate cell and enter the value, then click calculate. the results will be displayed.

usage example
known data: acceleration due to gravity; particle size; particle density; medium density; medium viscosity, find the terminal velocity.

input data: acceleration of gravity: 2 m/s²; particle size: 1m; particle density: 2 g/m3; medium density: 0.5g/m3; medium viscosity: 0.9 g/ms. click "calculate" to display the results.

output result: the terminal velocity is 0.1851852 m/s.

things to note
units for acceleration due to gravity, particle size, particle density, medium density, and medium viscosity can be checked. click the checkbox arrow to select the appropriate unit.

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