Millicoulombs to Coulombs Converter

Convert millicoulomb to coulomb instantly. 1 mC = 0.001 C, worked steps and a full reference table.

Formula

C = mC × 0.001

How to use it

Type the value in millicoulomb — the result updates as you type.
Use Swap to flip the direction, or change either dropdown to convert between any two units.
Click the result to copy it. The URL updates too, so you can bookmark or share the exact conversion.

Examples

1 mC	0.001 C
5 mC	0.005 C
10 mC	0.01 C
100 mC	0.1 C

One millicoulomb equals 0.001 coulombs (C). To convert millicoulombs to coulombs, multiply by 0.001; to go back the other way, multiply by 1000 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 millicoulombs and coulombs actually measure

Millicoulomb (mC) — A millicoulomb is a thousandth of a coulomb. Charge in small circuits and defibrillator output.

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

Millicoulombs to Coulombs conversion table

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

mC	C
1 mC	0.001 C
2 mC	0.002 C
5 mC	0.005 C
10 mC	0.01 C
25 mC	0.025 C
50 mC	0.05 C
100 mC	0.1 C

How to convert millicoulombs to coulombs by hand

Multiply the number of millicoulombs by 0.001.

For example, 25 mC × 0.001 = 0.025 C.

Going the other way, divide by 0.001 — or multiply by 1000, 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.

Questions people ask

How many C are in 1 mC?

1 mC equals exactly 0.001 C. Multiply any value in millicoulomb by 0.001 to get coulomb.

Is anything uploaded to a server?

No. The whole calculation happens in your browser. Nothing is sent anywhere, and the page keeps working offline once loaded.

Runs entirely in your browser. Nothing you type is uploaded, logged or shared.

Last updated 18 August 2026