Convert ah to coulombs
1 ampere-hour equals 3,600 coulombs. Enter a value below to convert instantly.
Need the other direction? Convert coulomb to ampere-hour →
Formula
Multiply the number of ampere-hours by 3600 to get coulombs.
Step by step
- Start with 1 A·h.
- Multiply by the conversion factor 3600.
- 1 × 3600 = 3,600 C.
Ampere-hours to Coulombs conversion table
| Ampere-hours (A·h) | Coulombs (C) |
|---|---|
| 1 | 3,600 |
| 2 | 7,200 |
| 5 | 18,000 |
| 10 | 36,000 |
| 20 | 72,000 |
| 50 | 180,000 |
| 100 | 360,000 |
| 500 | 1,800,000 |
Convert Ampere-hour to other electric charge units
1 A·h expressed in every other electric charge unit on this site.
- Coulomb C 3,600
- Megacoulomb MC 0.0036
- Kilocoulomb kC 3.6
- Millicoulomb mC 3,600,000
- Microcoulomb µC 3,600,000,000
- Nanocoulomb nC 3,600,000,000,000
- Picocoulomb pC 3.6e+15
- Ampere-hour A·h 1
- Milliampere-hour mA·h 1,000
- Ampere-minute A·min 60
- Ampere-second A·s 3,600
- Abcoulomb abC 360
- Statcoulomb statC 10,792,528,000,000
- Faraday F 0.037311371
- Elementary Charge e 2.2469433e+22
About the ampere-hour
The ampere-hour (A·h) is a Other unit of electric charge. Battery capacity: one ampere delivered for one hour.
About the coulomb
The coulomb (C) is a SI unit of electric charge.
Where this conversion is used
Converting ampere-hours to coulombs comes up when battery capacity, capacitor sizing, and electrochemistry. A milliampere-hour is a charge, not an energy — comparing batteries at different voltages needs watt-hours instead.
Related conversions
Frequently asked questions
How many coulombs are in a ampere-hour?
One ampere-hour equals 3,600 coulombs.
How do you convert ampere-hours to coulombs?
Multiply the number of ampere-hours by 3600 to get coulombs.
What is 1 coulomb in ampere-hours?
One coulomb equals 0.00027777778 ampere-hours.
When would I convert ampere-hours to coulombs?
This conversion is common when battery capacity, capacitor sizing, and electrochemistry.
Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.