Electric charge converter
Convert electric charge, including battery capacity in mAh and Ah.
3,000 Milliampere-hours = 10,800 Coulombs
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About these units
Electric charge is the amount of electricity carried by particles. The SI unit is the coulomb, the charge moved by one ampere in one second. Since 2019 the elementary charge of a proton is fixed at exactly 1.602176634 × 10⁻¹⁹ C.
Battery capacity is usually given in milliampere-hours (mAh) or ampere-hours (Ah): one mAh is 3.6 coulombs. To compare stored energy you also need the voltage: watt-hours = ampere-hours × volts.
Popular conversions
- Milliampere-hours to Coulombs
- Coulombs to Milliampere-hours
- Ampere-hours to Coulombs
- Coulombs to Ampere-hours
- Milliampere-hours to Ampere-hours
- Ampere-hours to Milliampere-hours
- Microcoulombs to Coulombs
- Coulombs to Microcoulombs
- Nanocoulombs to Coulombs
- Coulombs to Nanocoulombs
- Elementary charges to Coulombs
- Coulombs to Elementary charges
- Statcoulombs to Coulombs
Questions people ask
How many coulombs is 1 mAh?
Exactly 3.6 coulombs: 0.001 A for 3600 seconds.
How do I convert mAh to Wh?
Multiply mAh by the battery voltage and divide by 1000. A 5000 mAh battery at 3.7 V holds 18.5 Wh.
How many mAh are in 1 Ah?
Exactly 1000 mAh.
Factors checked 19 October 2026.