Milliampere-hours to Coulombs Converter
1 milliampere-hour = 3.6 coulombs
Charge, not energy. Converting mAh to watt-hours needs the battery voltage as well, so it is not a unit conversion.
1 milliampere-hour equals 3.6 coulombs
How to convert milliampere-hours to coulombs
Charge is current integrated over time: 1 Ah = 3600 C. Battery mAh is a charge rating; converting it to Wh additionally requires voltage and is not a charge-unit conversion.
C = mAh × 18/5One milliampere-hour is 18/5 coulombs, so a single multiplication converts any value.
36 C = 10 × 18/5Charge, not energy. Converting mAh to watt-hours needs the battery voltage as well, so it is not a unit conversion.
Milliampere-hours to coulombs conversion table
Common values in milliampere-hours, converted to coulombs.
| Milliampere-hours (mAh) | Coulombs (C) |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 3 | 10.8 |
| 4 | 14.4 |
| 5 | 18 |
| 10 | 36 |
| 20 | 72 |
| 25 | 90 |
| 50 | 180 |
| 100 | 360 |
| 250 | 900 |
| 500 | 1,800 |
| 1,000 | 3,600 |
About these units
milliampere-hourmAh
The battery capacity unit printed on phone and laptop cells.
coulombC
The SI derived unit of electric charge: one ampere-second.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.