Electric Charge Converter
Convert coulombs, ampere-hours and milliampere-hours.
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
About electric charge units
Charge is current multiplied by time: one coulomb is one ampere flowing for one second. Battery capacity is quoted in milliampere-hours, which is charge rather than energy — converting mAh to watt-hours also needs the battery voltage, so it is not a unit conversion on its own.
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.
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Compare unit values in the base unit. Numbers are rounded to 8 significant digits; conventions and assumptions appear beside the units.
| Unit | Symbol | 1 unit in C |
|---|---|---|
| coulomb | C | 1 |
| millicoulomb | mC | 0.001 |
| microcoulomb | µC | 0.000001 |
| ampere-hour | Ah | 3,600 |
| milliampere-hourCharge, not energy. Converting mAh to watt-hours needs the battery voltage as well, so it is not a unit conversion. | mAh | 3.6 |
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