A faraday (F) is the electric charge carried by one mole of electrons. Its value is approximately 96485 coulombs per mole. It is named after Michael Faraday and is widely used in electrochemistry to describe charge in terms of moles of electrons.

How many Ah is one faraday?

One faraday equals 96485 coulombs. Since 1 Ah = 3600 coulombs, one faraday ≈ 96485 ÷ 3600 ≈ 26.8014 Ah.

What is the exact Faraday constant used?

This tool uses 96485.33212 C/mol, the 2018 CODATA recommended value (exact by NIST definition: F = N_A × e = 6.02214076×10²³ × 1.602176634×10⁻¹⁹).

Is this the same faraday as the unit of capacitance?

No. The farad (F) of capacitance measures how much charge a capacitor stores per volt. The faraday of electrochemistry measures charge in moles of electrons. They are different quantities with similar names — context makes the distinction clear.

When would I use faradays instead of coulombs?

Faradays are convenient in electrochemistry because electrode reactions are stoichiometric: depositing 1 mol of a monovalent metal (e.g. silver) requires exactly 1 faraday, depositing 1 mol of a divalent metal (e.g. copper) requires 2 faradays.

Ampere Hours to Faradays Converter

Convert ampere-hours (Ah) to faradays of electric charge using the Faraday constant (1 F = 96485 C = 26.801 Ah).

Ampere-Hours → Faradays

Enter a value in either field — the other updates instantly.

Ampere-hours (Ah)

Faradays (F)

Conversion Results

Faradays —

Coulombs (C) —

Millicoulombs (mC) —

Ampere-hours (Ah) —

Faraday Constant Reference

Faraday Constant

96485.33212 C/mol

1 Faraday in Ah

26.80148 Ah

1 Ah in Faradays

0.037311 F

Summary

This converter translates ampere-hours (Ah) into faradays (F), the unit of electric charge used in electrochemistry. One faraday equals one mole of electrons, or 96485 coulombs — equivalent to approximately 26.801 Ah. The conversion is exact: divide the charge in coulombs (Ah × 3600) by 96485.

How it works

Enter the charge value in ampere-hours (Ah) in the input field.
The tool multiplies Ah by 3600 to convert to coulombs (1 Ah = 3600 C).
The coulomb value is divided by the Faraday constant (96485 C/mol) to get faradays.
Results update instantly — no button needed.
Use the reverse field to convert faradays back to Ah.

Use cases

Calculate moles of electrons transferred during electrolysis.
Determine battery capacity in electrochemical terms.
Verify charge quantities in electroplating processes.
Convert lab measurements between Ah and faraday units.
Check electrode reactions that consume or produce specific faraday amounts.
Cross-reference electrochemical data from different unit systems.

Frequently Asked Questions

Last updated: 2026-07-14 · Reviewed by Nham Vu