Millicoulombs to Ampere-hours Conversion

Enter the electric charge in millicoulombs below to get the value converted to ampere-hours.

Results in Ampere-hours:
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1 mC = 2.7778E-7 Ah
Hint: use a scientific notation calculator to convert E notation to decimal

How to Convert Millicoulombs to Ampere-hours

To convert a millicoulomb measurement to an ampere-hour measurement, divide the electric charge by the conversion ratio.

Since one ampere-hour is equal to 3,600,000 millicoulombs, you can use this simple formula to convert:

ampere-hours = millicoulombs ÷ 3,600,000

The electric charge in ampere-hours is equal to the millicoulombs divided by 3,600,000.

For example, here's how to convert 5,000,000 millicoulombs to ampere-hours using the formula above.
5,000,000 mC = (5,000,000 ÷ 3,600,000) = 1.388889 Ah

Millicoulombs and ampere-hours are both units used to measure electric charge. Keep reading to learn more about each unit of measure.


The millicoulomb is 1/1,000 of a coulomb, which is the electric charge equal to one ampere of current over one second.

The millicoulomb is a multiple of the coulomb, which is the SI derived unit for electric charge. In the metric system, "milli" is the prefix for 10-3. Millicoulombs can be abbreviated as mC; for example, 1 millicoulomb can be written as 1 mC.


One ampere-hour is the electric charge equal to the charge conveyed by a current of one ampere for one hour. One ampere-hour is equal to 3,600 coulombs.

The ampere-hour is a non-SI metric unit for electric charge. An ampere-hour is sometimes also referred to as an amp-hour. Ampere-hours are usually abbreviated as Ah, although the formally adopted expression is A·h. The abbreviation A h is also sometimes used. For example, 1 ampere-hour can be written as 1 Ah, 1 A·h, or 1 A h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.[1]

Millicoulomb to Ampere-hour Conversion Table

Millicoulomb measurements converted to ampere-hours
Millicoulombs Ampere-hours
1 mC 0.00000027778 Ah
2 mC 0.00000055556 Ah
3 mC 0.00000083333 Ah
4 mC 0.0000011111 Ah
5 mC 0.0000013889 Ah
6 mC 0.0000016667 Ah
7 mC 0.0000019444 Ah
8 mC 0.0000022222 Ah
9 mC 0.0000025 Ah
10 mC 0.0000027778 Ah
100 mC 0.000027778 Ah
1,000 mC 0.000278 Ah
10,000 mC 0.002778 Ah
100,000 mC 0.027778 Ah
1,000,000 mC 0.277778 Ah
10,000,000 mC 2.7778 Ah


  1. Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019,