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Electric charge converter
Coulombs, amp-hours and the charge in a battery. 6 units, converted from one table of exact factors.
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1 milliampere-hour in every other electric charge unit
Computed by the same engine that runs the converter above, so these can never drift apart from it.
| From | Equals | Unit |
|---|---|---|
| 1 milliampere-hour | 3.6 | coulomb (C) |
| 1 milliampere-hour | 3,600 | millicoulomb (mC) |
| 1 milliampere-hour | 3,600,000 | microcoulomb (µC) |
| 1 milliampere-hour | 0.001 | ampere-hour (Ah) |
| 1 milliampere-hour | 2.246943267 × 10^+19 | elementary charge (e) |
What each unit actually is
Most converters give you a number and stop. Where a figure is exact by definition we say so, and where it is an average or shifts with conditions we say that too — that is usually the thing you needed to know.
| Unit | Symbol | What it actually is |
|---|---|---|
| coulomb | C | One amp flowing for one second. |
| millicoulomb | mC | |
| microcoulomb | µC | |
| ampere-hour | Ah | Exact. Battery capacity is quoted in these. |
| milliampere-hour | mAh | What a phone battery is labelled with. |
| elementary charge | e | The charge on one proton. Exact since the 2019 SI redefinition. |
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