Coulombs to Ampere Hours Converter
ElectricalCoulombs, ampere-hours and more.
How to convert Coulombs to Ampere Hours
Multiply the coulombs value by 0.000277778: 1 C = 0.000277778 Ah. Going the other way, 1 Ah = 3,600 C, so divide by 0.000277778 or use the Ampere Hours to Coulombs converter.
About these units
Coulombs (C)
The coulomb is the SI unit of electric charge: the charge carried by a current of one ampere in one second, about 6.24 × 10¹⁸ elementary charges.
Ampere Hours (Ah)
An ampere-hour is the charge delivered by one ampere flowing for one hour, exactly 3,600 coulombs. Car and deep-cycle batteries are rated in Ah.
Coulombs to Ampere Hours conversion table
| Coulombs (C) | Ampere Hours (Ah) |
|---|---|
| 1 C | 0.000277778 Ah |
| 2 C | 0.000555556 Ah |
| 3 C | 0.000833333 Ah |
| 4 C | 0.00111111 Ah |
| 5 C | 0.00138889 Ah |
| 10 C | 0.00277778 Ah |
| 20 C | 0.00555556 Ah |
| 25 C | 0.00694444 Ah |
| 50 C | 0.0138889 Ah |
| 100 C | 0.0277778 Ah |
| 500 C | 0.138889 Ah |
| 1,000 C | 0.277778 Ah |