Coulombs to Milliampere-hours
Type a value in Coulombs and get the result in Milliampere-hours, calculated exactly.
3,000 Coulombs ≈ 833.3333333 Milliampere-hours
Precision
Exact factorRounded for display to about 10 significant digits.
Slide rule
Drag to scrub · arrow keys step · Shift × 10Paper tape
ConvertThemAll
- Your conversions print here.
0 lines · kept on this device only
Formula
mAh = C ÷ 3.6
To convert Coulombs to Milliampere-hours, divide the value by 3.6.
Worked examples
- 1 C ÷ 3.6 ≈ 0.2777777778 mAh
- 3,000 C ÷ 3.6 ≈ 833.3333333 mAh
- 100 C ÷ 3.6 ≈ 27.77777778 mAh
This factor is exact by definition.
Conversion table
| Coulombs (C) | Milliampere-hours (mAh) |
|---|---|
| 1 | ≈ 0.2777778 |
| 2 | ≈ 0.5555556 |
| 3 | ≈ 0.8333333 |
| 4 | ≈ 1.111111 |
| 5 | ≈ 1.388889 |
| 6 | ≈ 1.666667 |
| 7 | ≈ 1.944444 |
| 8 | ≈ 2.222222 |
| 9 | 2.5 |
| 10 | ≈ 2.777778 |
| 15 | ≈ 4.166667 |
| 20 | ≈ 5.555556 |
| 25 | ≈ 6.944444 |
| 30 | ≈ 8.333333 |
| 40 | ≈ 11.11111 |
| 50 | ≈ 13.88889 |
| 60 | ≈ 16.66667 |
| 70 | ≈ 19.44444 |
| 75 | ≈ 20.83333 |
| 80 | ≈ 22.22222 |
| 90 | 25 |
| 100 | ≈ 27.77778 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Milliampere-hours to Coulombs
| Milliampere-hours (mAh) | Coulombs (C) |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 3 | 10.8 |
| 4 | 14.4 |
| 5 | 18 |
| 6 | 21.6 |
| 7 | 25.2 |
| 8 | 28.8 |
| 9 | 32.4 |
| 10 | 36 |
| 15 | 54 |
| 20 | 72 |
| 25 | 90 |
| 30 | 108 |
| 40 | 144 |
| 50 | 180 |
| 60 | 216 |
| 70 | 252 |
| 75 | 270 |
| 80 | 288 |
| 90 | 324 |
| 100 | 360 |
Unit definitions
- Coulombs C
- The SI unit of charge: one ampere for one second.
- Milliampere-hours mAh
- One milliampere for one hour: exactly 3.6 coulombs.
Questions people ask
Coulombs to Milliampere-hours: what is the conversion factor?
One C is ≈ 0.2777777778 mAh.
How do I convert Coulombs to Milliampere-hours?
Use the formula above. For example, 3,000 C = ≈ 833.3333333 mAh.
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.