Nernst Equation Calculator
Calculate cell potential using the Nernst equation at 25°C.
Nernst Equation measurements
Enter your values, then calculate.
Result
How to calculate nernst equation
The Nernst equation calculates the actual electrode potential of an electrochemical cell under non-standard conditions, based on the standard potential and reaction quotient.
How the calculation works
E = E° − (0.05916 ÷ n) × log₁₀(Q), where E° is standard potential, n is electrons transferred, and Q is the reaction quotient, at 25°C.
Example
A standard potential of 1.10V, 2 electrons transferred, reaction quotient of 0.01: 1.10 − (0.05916÷2)×log₁₀(0.01) = 1.10 − 0.02958×(−2) = 1.10+0.0592 ≈ 1.159V.
Frequently asked questions
How is Result calculated?
Result = [Standard potential] − (0.0592 ÷ [Electrons transferred]) × log10([Reaction quotient Q]).
Is the Nernst Equation Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Nernst Equation Calculator
E = E° − (0.05916 ÷ n) × log₁₀(Q), where E° is standard potential, n is electrons transferred, and Q is the reaction quotient, at 25°C.
Let's understand your nernst equation result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Nernst Equation
- The 0.05916 constant is specific to 25°C (298K) — at a different temperature, this constant changes since it's derived from RT/F.
- When Q equals 1 (standard conditions), log₁₀(1)=0, and the equation correctly simplifies to E = E°.
Common Nernst Equation Mistakes to Avoid
- Using the 0.05916 constant at a significantly different temperature than 25°C, since this value is specifically derived for standard temperature and changes with temperature.
When to Use This Calculator
The Nernst equation calculates the actual electrode potential of an electrochemical cell under non-standard conditions, based on the standard potential and reaction quotient.