Chemistry / CALCULATOR

Standard Cell Potential

Standard Cell Potential: explore an explicit model with input checks, a formula and a worked example.

Runs on your deviceUpdates as you typeFormula & example ↓
01

Your inputs

Adjust the values to explore a different result.

V
Enter cathode reduction potential in V.
V
Enter anode reduction potential in V.

Formula

E°cell=E°cathode−E°anode; both inputs are reduction potentials.
  • Use the units shown beside each field.
  • Results update automatically whenever you change an input.
  • Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
  • Standard-condition thermodynamic potential; excludes overpotential, internal resistance and nonstandard activities.

Example Calculation

Example inputs
  • Cathode reduction potential: 0.34 V
  • Anode reduction potential: -0.76 V

0.34 V minus −0.76 V gives 1.10 V.

Frequently asked questions

How do I use this calculator?

Enter cathode reduction potential, anode reduction potential. The result updates automatically. Use Reset to restore the example values.

What method does it use?

E°cell=E°cathode−E°anode; both inputs are reduction potentials.. Standard-condition thermodynamic potential; excludes overpotential, internal resistance and nonstandard activities.

Why might a rounded result differ?

The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.

Are my inputs saved online?

No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.

Check the assumptions and units before using this result. Read about calculation methods.