Electrolysis Calculator — Faraday's Laws

Faraday's laws turn electric charge into chemical mass: total charge (current × time) divided by Faraday's constant gives moles of electrons, and the half-reaction tells you how many electrons each atom needs.

Electrolysis Calculator — Faraday's Laws

$m = \frac{ItM}{nF}$

Solve for

Current (I)

Unit

Time (t)

Unit

Electrons per ion (n)

Unit

Molar mass of substance (M)

Unit

Result unit

How to interpret the result

Worked check: silver plating at 2.00 A for 1.00 hour (Ag⁺ + e⁻ → Ag, M = 107.87 g/mol) → m = 2.00 × 3600 × 0.10787 / 96485 = 0.00805 kg = 8.05 gram of silver. Assumes 100% current efficiency — real cells lose some charge to side reactions.

Assumptions

100% current efficiency (no side reactions)
Faraday's constant F = 96485 C/mol
Steady current over the whole time