Electric Charge Converter (C, mAh, Ah)
Enter a value and pick units — the conversion updates instantly.
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Show all units
- Coulomb (C)-
- Millicoulomb (mC)-
- Microcoulomb (µC)-
- Nanocoulomb (nC)-
- Ampere-hour (Ah)-
- Milliampere-hour (mAh)-
- Franklin (statcoulomb) (Fr)-
- Abcoulomb (abC)-
- Elementary charge (e)-
How to use
- Type a number in “Value” and choose the units to convert from and to. The page opens on mAh → C.
- mAh and Ah are current multiplied by time, so they measure charge. You can turn the capacity printed on a battery into coulombs.
- “Show all units” lists the same charge in every unit at once. Huge numbers such as electron counts appear in exponent form, like 6.2e+18.
- The page address keeps your value and units, so you can share the link as is.
FAQ
How many coulombs is 1 mAh?
1 mAh is 1 mA flowing for an hour (3600 s), which is 3.6 C. A 5000 mAh battery holds 18,000 C.
Can I convert mAh to Wh?
Only if you know the voltage: Wh = mAh × V ÷ 1000. A 3.7 V, 5000 mAh battery stores about 18.5 Wh. Wh is energy, so it is not part of this charge converter.
How many electrons make one coulomb?
About 6.24 × 10¹⁸. Since 2019 the elementary charge has been fixed at exactly 1.602176634 × 10⁻¹⁹ C.
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