Which reaction form is assumed?

The calculator assumes Ox + ne = Red and uses Q = aRed / aOx.

Can I use concentrations?

For simple dilute examples, concentrations are often used as activity approximations.

What temperature unit is used?

Enter temperature in degrees C; the calculator converts to Kelvin.

ToolsConductScience tool

ElectrochemistryFree in-browser calculator

Nernst Equation Calculator.

Calculate redox potential from activities, temperature, electron count, and standard potential. For materials research, education, and protocol documentation only. Not a certified inspection, compliance, asset-integrity, or final acceptance tool.

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Validated2026-05-24

CitableMethods and citation included

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Try it out

Load example nernst equation data to see the full workflow

Nernst Equation inputs

Standard potential E0

Electrons n

Oxidized activity

Reduced activity

Temperature

Results

Potential E

0.28084 V

Reaction quotient

100

Temperature

298.15 K

0.34

0.281

Review notes

Activities, complexation, pH, and reference electrode conventions must match the intended reaction.

Methods note

Uses E = E0 - (RT / nF) ln(aRed / aOx).

Scope and limitations

For materials research, education, and protocol documentation only. Not a certified inspection, compliance, asset-integrity, or final acceptance tool.

Results are deterministic calculations from the values entered here. Review units, assumptions, and measurement quality before using outputs in reports or protocols.

Method

Uses the tool-specific formulas and assumptions shown in the calculator output.

Validated

Last validated 2026-05-24. Calculations are designed for planning and documentation support; verify procurement decisions against manufacturer specifications or institutional SOPs.

How to cite

How to Cite

Nernst Equation Calculator (1.2.0). ConductScience, Inc. 2026. Available at: https://conductscience.com/tools/nernst-equation-calculator

For materials research, education, and protocol documentation only. Not a certified inspection, compliance, asset-integrity, or final acceptance tool.

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