Ampere-hours to Coulombs Converter Ah → C
1 ampere-hour (Ah) = 3600 coulombs (C). Type a value below — the conversion happens instantly, entirely on your device.
1 Ah = 3600 C
1 ampere-hours = 3600 coulombs
1 × 3600 = 3600
1 Ah equals 3600 C, so multiplying by 3600 converts the value. The result describes the exact same quantity — only the measuring stick changes.
How to convert ampere-hours to coulombs
coulombs = ampere-hours × 3600 — multiply the ampere-hour value by 3600.
Example: 10 Ah = 36,000 C.
To convert the other way: ampere-hours = coulombs ÷ 3600
Ampere-hours to Coulombs conversion table
| Ampere-hours (Ah) | Coulombs (C) |
|---|---|
| 0.1 | 360 |
| 0.25 | 900 |
| 0.5 | 1800 |
| 1 | 3600 |
| 2 | 7200 |
| 3 | 10,800 |
| 4 | 14,400 |
| 5 | 18,000 |
| 6 | 21,600 |
| 7 | 25,200 |
| 8 | 28,800 |
| 9 | 32,400 |
| 10 | 36,000 |
| 15 | 54,000 |
| 20 | 72,000 |
| 25 | 90,000 |
| 30 | 108,000 |
| 40 | 144,000 |
| 50 | 180,000 |
| 75 | 270,000 |
| 100 | 360,000 |
| 250 | 900,000 |
| 500 | 1,800,000 |
| 1000 | 3,600,000 |
About the units
What is a ampere-hour?
The charge from one ampere flowing for one hour — exactly 3600 coulombs. Car and deep-cycle battery capacity is rated in ampere-hours.
What is a coulomb?
The SI unit of electric charge — the charge carried by a one-ampere current in one second. It equals about 6.24×10¹⁸ elementary charges.
Frequently asked questions
How many coulombs are in 1 ampere-hour?
1 ampere-hour (Ah) = 3600 coulombs (C).
What is the formula to convert ampere-hours to coulombs?
coulombs = ampere-hours × 3600 — multiply the ampere-hour value by 3600.
How do I convert Ah to C without a calculator?
Multiply by 3600 for a close estimate. Exact factor: 1 Ah = 3600 C.
Is this Ah-to-C converter accurate and private?
Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.