Electrolysis Calculator
Choose the quantity you want to find and enter the other values. This is an educational calculator for the electrical charge and mole relationships behind electrolysis; it gives no setup, electrode, or substance-production guidance.
Last updated: September 26, 2026
Frequently asked questions
What is Faraday's law used here?
Q = nF relates electric charge to the amount of electrons transferred, where F is the Faraday constant (about 96,485.33 coulombs per mole of electrons). Combined with Q = It, it links charge, current, and time.
How much charge is one mole of electrons?
Exactly one Faraday, 96,485.33212 coulombs. This is the charge of Avogadro's number of electrons.
Does this tell me how much product an electrolysis cell will make?
No. It only computes the electrical charge/mole-of-electrons relationship. Relating that to a specific product requires knowing the reaction's electron stoichiometry and cell efficiency, which this calculator does not model or provide guidance on.
Does this calculator give setup or safety instructions for running electrolysis?
No. It is strictly an educational calculator for the charge and electron-mole arithmetic behind Faraday's law. It does not describe electrodes, electrolytes, apparatus, or how to produce or collect any substance.
What's the difference between charge, current, and moles of electrons here?
Charge (Q, in coulombs) is the total electrical quantity transferred. Current (I, in amperes) is charge per unit time. Moles of electrons (n) converts charge into a chemistry-relevant amount using the Faraday constant.
How does this relate to Avogadro's Number?
The Faraday constant is Avogadro's number times the charge of a single electron. See the Avogadro's Number Calculator for conversions between moles and particle counts more generally.