Coulomb to Ampere Hour Converter
Convert coulomb to ampere-hour instantly.
Standard electric charge units
Fun comparisons
How to convert coulomb to ampere-hour
Enter your electric charge in coulomb and get the equivalent in ampere-hour instantly. Key reference points: a typical smartphone battery holds 4000 mAh (14,400 coulombs), an AA battery holds about 2500 mAh (9000 C), and a lightning bolt transfers about 5 coulombs.
Coulomb is the fundamental SI charge unit; ampere-hours are the practical unit for battery capacity ratings used in automotive, UPS and renewable energy storage systems.
Need the opposite direction? Convert ampere-hour to coulomb just as easily, or explore all our electric charge conversions.
Common coulomb to ampere-hour conversions
| Coulomb (C) | Ampere Hour (Ah) |
|---|---|
| 1 | 0.000277778 |
| 5 | 0.00138889 |
| 10 | 0.00277778 |
| 25 | 0.00694444 |
| 50 | 0.0138889 |
| 100 | 0.0277778 |
| 500 | 0.138889 |
| 1000 | 0.277778 |
Frequently asked questions
1 coulomb equals 0.000277778 ampere-hour.
Multiply by 0.000277778. For example, 5 C = 0.00138889 Ah.
A 100 ampere-hour battery holds 360,000 coulombs of charge.
1 ampere-hour equals 3600 coulomb.
100 coulomb equals 0.0277778 ampere-hour.