Coulombs to Elementary Charge Converter

One coulomb equals 6.2415e+18 elementary charges (e). To convert coulombs to elementary charges, multiply by 6.2415e+18; to go back the other way, multiply by 1.6022e-19 instead.

The converter above does it as you type and shows the working underneath, so you can check the arithmetic rather than take the number on trust.

What coulombs and elementary charges actually measure

Coulomb (C) — The coulomb is the SI unit of charge — one amp flowing for one second. Physics and electrical theory.

Elementary charge (e) — The elementary charge is the charge on a single proton, 1.602 × 10⁻¹⁹ coulombs. Atomic physics and semiconductor theory.

Coulombs to Elementary Charge conversion table

The most common values, worked out in advance. Anything not listed can be typed straight into the converter.

How to convert coulombs to elementary charges by hand

Multiply the number of coulombs by 6.2415e+18.

For example, 25 C × 6.2415e+18 = 1.5604e+20 e.

Going the other way, divide by 6.2415e+18 — or multiply by 1.6022e-19, which is the same thing and easier to do in your head.

Everything runs in your browser

There is no server involved in the calculation. The numbers you type never leave your device, nothing is logged, and the page keeps working with no connection once it has loaded. That is not a marketing line — it is simply how the tool is built, because a calculation like this has no reason to touch a network.