Coulomb to Milliampere-hour Converter

1 coulomb is about 0.2777777778 milliampere-hours. Convert coulombs (C) to milliampere-hours (mAh) below: type a value and the result updates as you type.

C to mAh calculator

Result

Coulomb to Milliampere-hour conversion

1 C ≈ 0.2777777778 mAhone coulomb in milliampere-hours

1 mAh = 3.6 Cone milliampere-hour in coulombs

Coulomb (C): SI unit of electric charge: the charge carried by a current of one ampere in one second.

Milliampere-hour (mAh): One thousandth of an ampere-hour: exactly 3.6 C. Phone and power bank batteries are rated in mAh.

Source:SI Brochure, 9th edition (BIPM, 2019)

How to convert coulombs to milliampere-hours

To convert coulombs to milliampere-hours, divide the number of coulombs by 3.6.

Formula

mAh = C ÷ 3.6

Examples

5 C = 5 ÷ 3.6 ≈ 1.388888889 mAh
25 C = 25 ÷ 3.6 ≈ 6.944444444 mAh
100 C = 100 ÷ 3.6 ≈ 27.77777778 mAh

Coulomb to Milliampere-hour conversion table

Coulomb to Milliampere-hour
Coulomb (C)	Milliampere-hour (mAh)
0.1 C	0.02777777778 mAh
0.5 C	0.1388888889 mAh
1 C	0.2777777778 mAh
2 C	0.5555555556 mAh
3 C	0.8333333333 mAh
5 C	1.388888889 mAh
10 C	2.777777778 mAh
20 C	5.555555556 mAh
25 C	6.944444444 mAh
50 C	13.88888889 mAh
100 C	27.77777778 mAh
250 C	69.44444444 mAh
500 C	138.8888889 mAh
1000 C	277.7777778 mAh

Values rounded to 10 significant digits where needed.

Frequently asked questions

How many milliampere-hours are in one coulomb?: One coulomb is about 0.2777777778 milliampere-hours.
How do I convert milliampere-hours to coulombs?: To convert milliampere-hours to coulombs, multiply the number of milliampere-hours by 3.6. The formula is C = mAh × 3.6.
Is this conversion exact?: Yes. Both units have exact definitions and the factor 3.6 is exact. Displayed results are only rounded when they have many decimal places.
Which is larger, a coulomb or a milliampere-hour?: A milliampere-hour is 3.6 times larger than a coulomb. In other words, a coulomb is about 0.2777777778 of a milliampere-hour.