Standard Cell Potential Calculator: E°cell = E°cathode - E°anode

Standard Cell Potential Calculator

🔋 Rates & Electrochemistry. Use the Standard cell potential formula to find cell potential, e° of the cathode (reduced), e° of the anode (oxidised): pick the value you want, type the others, and the answer updates as you go.

E^\circ_{cell} = E^\circ_{cathode} - E^\circ_{anode}

Cell potential (V)E° of the cathode (reduced) (V)E° of the anode (oxidised) (V)

Cell potential1.1 V

Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.

What each letter means

Quantity	Unit
Cell potential	V
E° of the cathode (reduced)	V
E° of the anode (oxidised)	V

Worked example

Find the cell potential when E° of the cathode (reduced) = 0.34 V, E° of the anode (oxidised) = -0.76 V.

Using E°cell = E°cathode - E°anode: Cell potential = 1.1 V.

Frequently asked questions

What is the formula for Standard cell potential?

E°cell = E°cathode - E°anode.

What do the letters stand for, and what units are used?

Cell potential in V, E° of the cathode (reduced) in V, E° of the anode (oxidised) in V.

How do you calculate cell potential?

Put the values into E°cell = E°cathode - E°anode. For example, with E° of the cathode (reduced) = 0.34 V, E° of the anode (oxidised) = -0.76 V, cell potential = 1.1 V.

Can I solve for a different value?

Yes. In the calculator above, pick the circle next to any value (cell potential, e° of the cathode (reduced), e° of the anode (oxidised)) and fill in the others: it rearranges the formula for you.