basic

Electrochemical Equilibrium Constant from Standard EMF Calculator

K from ΔG° = −nFE° = −RT ln K.

Calculates the equilibrium constant K = exp(nFE°/RT) from the standard cell EMF E° and number of electrons transferred n. Also shows ΔG° in kJ/mol.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

V
K

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

K = exp(nFE°/RT); ΔG° = −nFE°

In depth

Calculates the equilibrium constant K = exp(nFE°/RT) from the standard cell EMF E° and number of electrons transferred n. Also shows ΔG° in kJ/mol.