Coulombs to Milliampere-Hours Converter

C → mAh: type a value and the result appears instantly.

1 C = 0.2777777778 mAh
1 mAh = 3.6 C

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How to convert coulombs to milliampere-hours

Use this formula:

mAh = C ÷ 3.6

Examples

5 C = 1.38889 mAh
12 C = 3.33333 mAh
100 C = 27.7778 mAh

C to mAh conversion chart

coulombs (C)	milliampere-hours (mAh)
0.1 C	0.0277778 mAh
0.25 C	0.0694444 mAh
0.5 C	0.138889 mAh
1 C	0.277778 mAh
2 C	0.555556 mAh
3 C	0.833333 mAh
4 C	1.11111 mAh
5 C	1.38889 mAh
6 C	1.66667 mAh
7 C	1.94444 mAh
8 C	2.22222 mAh
9 C	2.5 mAh
10 C	2.77778 mAh
12 C	3.33333 mAh
15 C	4.16667 mAh
20 C	5.55556 mAh
25 C	6.94444 mAh
30 C	8.33333 mAh
40 C	11.1111 mAh
50 C	13.8889 mAh
60 C	16.6667 mAh
70 C	19.4444 mAh
75 C	20.8333 mAh
80 C	22.2222 mAh
90 C	25 mAh
100 C	27.7778 mAh
150 C	41.6667 mAh
200 C	55.5556 mAh
250 C	69.4444 mAh
500 C	138.889 mAh
1,000 C	277.778 mAh

About the units

Coulomb (C) is a metric (SI) unit. 1 C = 0.2777777778 mAh.

Milliampere-hour (mAh) is a commonly used unit. 1 mAh = 3.6 C.

Frequently asked questions

How do I convert coulombs to milliampere-hours?: Divide the value in C by 3.6.
How many milliampere-hours are in 1 coulomb?: 1 C = 0.2777777778 mAh.
What is 12 C in mAh?: 12 C = 3.33333 mAh.
How do I convert milliampere-hours to coulombs?: Use the reverse converter: mAh → C.

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Related conversions

mAh → C mAh → Ah Ah → mAh Ah → C C → Ah

Sources: NIST SP 811 · BIPM SI Brochure · NIST Handbook 44. Last reviewed: 2026-10 · FreeUnitConverters