Diffusion Coefficient Calculator

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Calculates the diffusion coefficient using the Einstein-Smoluchowski equation.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Boltzmann Constant (k), Temperature (T), and Drag Coefficient (γ) in the units shown.

Step 2

Read Diffusion Coefficient (D) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Boltzmann Constant (k): 0.00000000000000000000001380649 J/K; Temperature (T): 298 K; Drag Coefficient (γ): 0.000000001 kg/s

Diffusion Coefficient (D): 0.00000000000411433402 m²/s

Boltzmann Constant (k): 0.00000000000000000000001380649 J/K; Temperature (T): 373 K; Drag Coefficient (γ): 0.000000001 kg/s

Diffusion Coefficient (D): 0.00000000000514982077 m²/s

Boltzmann Constant (k): 0.00000000000000000000001380649 J/K; Temperature (T): 298 K; Drag Coefficient (γ): 0.0000000001 kg/s

Diffusion Coefficient (D): 0.0000000000411433402 m²/s

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