Nernst Cell Potential Calculator
Enter E0, the number of electrons, and the reaction quotient Q.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
The standard cell potential (E0) measured under standard conditions only tells part of the story — the actual voltage a battery or electrochemical cell produces shifts with the real concentrations of reactants and products involved, described by the Nernst equation: E = E0 − (RT/nF)·ln(Q), which simplifies at 25°C to E = E0 − (0.025693/n)·ln(Q), where n is the number of electrons transferred and Q is the reaction quotient.
This calculator computes the actual cell potential from E0, n and Q at that standard 25°C temperature, a core calculation in electrochemistry courses and battery/corrosion research — it's the same relationship behind why a battery's voltage sags as it discharges (as reactant concentrations fall, Q changes and E drops) and why pH electrodes and ion-selective sensors can measure concentration from a voltage reading.
Was this helpful?
Popular calculators
Loan Calculator
Monthly payment, total interest and full amortization schedule.
Percentage Calculator
Percent change, percent of, and ratio calculations.
Discount Calculator
Calculate final price, savings, and discount amount.
BMI Calculator
Body mass index from height and weight (metric or imperial).
Age Calculator
Compute your exact age in years, months and days from a birth date.
Compound Interest Calculator
Calculate the final amount and interest earned with compounding.
All Calculators
No calculators found
Comments (0)