Convert Coulomb to Milliampere-hour
Live bidirectional calculator for Coulombs (C) and Milliampere-hours (mAh) with verified formula and conversion charts.
Electric Charge8 units
How the Calculation Works (Linear Scaling)
Since 1 Milliampere-hour = 3.6 Coulombs, divide the value in Coulombs by 3.6.
Coulomb to Milliampere-hour Conversion Table
Precomputed values for quick reference and printing.
| Coulomb | Milliampere-hour |
|---|---|
| 1 C | 0.2778 mAh |
| 2 C | 0.5556 mAh |
| 3 C | 0.8333 mAh |
| 4 C | 1.1111 mAh |
| 5 C | 1.3889 mAh |
| 6 C | 1.6667 mAh |
| 7 C | 1.9444 mAh |
| 8 C | 2.2222 mAh |
| 9 C | 2.5 mAh |
| 10 C | 2.7778 mAh |
| 15 C | 4.1667 mAh |
| 20 C | 5.5556 mAh |
| 25 C | 6.9444 mAh |
| 30 C | 8.3333 mAh |
| 40 C | 11.1111 mAh |
| 50 C | 13.8889 mAh |
| 75 C | 20.8333 mAh |
| 100 C | 27.7778 mAh |
| Milliampere-hour | Coulomb |
|---|---|
| 1 mAh | 3.6 C |
| 2 mAh | 7.2 C |
| 3 mAh | 10.8 C |
| 4 mAh | 14.4 C |
| 5 mAh | 18 C |
| 6 mAh | 21.6 C |
| 7 mAh | 25.2 C |
| 8 mAh | 28.8 C |
| 9 mAh | 32.4 C |
| 10 mAh | 36 C |
| 15 mAh | 54 C |
| 20 mAh | 72 C |
| 25 mAh | 90 C |
| 30 mAh | 108 C |
| 40 mAh | 144 C |
| 50 mAh | 180 C |
| 75 mAh | 270 C |
| 100 mAh | 360 C |
๐ Standard Benchmark Reference Values
Standard mobile battery charge capacity ratio (1 Ah = 3,600 coulombs).
Exact RatioAbout Coulomb (C)
The SI base unit of electric charge, equal to the quantity of electricity conveyed in one second by a current of one ampere (1 C = 1 Aยทs).
History: Named after French physicist Charles-Augustin de Coulomb who formulated Coulombโs law of electrostatic force in 1785.
Common Uses: Standard measure of electrostatic charge, capacitor stored charge (Q = CV), and chemical electroplating.
About Milliampere-hour (mAh)
Unit of electric charge equal to one thousandth of an ampere-hour (3.6 coulombs).
History: Ubiquitous consumer electronics specification for rechargeable lithium-ion battery capacity.
Common Uses: Smartphone, laptop, drone, and portable electronics battery capacity ratings.
โ Frequently Asked Questions
How many Milliampere-hours are in 1 Coulomb?
There are exactly 0.277778 Milliampere-hours in 1 Coulomb (1 C = 0.277778 mAh).
What is the formula to convert Coulomb to Milliampere-hour?
The formula is: Milliampere-hour = Coulomb / 3.6. Since 1 Milliampere-hour = 3.6 Coulombs, divide the value in Coulombs by 3.6.
How do I convert 1 C to mAh manually?
To convert 1 C to mAh: apply the formula Milliampere-hour = Coulomb / 3.6. Substituting gives: 1 / 3.6 = 0.2778 mAh.