Ampere-hours to Milliampere-hours Converter Ah → mAh
1 ampere-hour (Ah) = 1000 milliampere-hours (mAh). Type a value below — the conversion happens instantly, entirely on your device.
1 Ah = 1000 mAh
1 ampere-hours = 1000 milliampere-hours
1 × 1000 = 1000
1 Ah equals 1000 mAh, so multiplying by 1000 converts the value. The result describes the exact same quantity — only the measuring stick changes.
How to convert ampere-hours to milliampere-hours
milliampere-hours = ampere-hours × 1000 — multiply the ampere-hour value by 1000.
Example: 10 Ah = 10,000 mAh.
To convert the other way: ampere-hours = milliampere-hours ÷ 1000 — or use the dedicated mAh to Ah converter .
Ampere-hours to Milliampere-hours conversion table
| Ampere-hours (Ah) | Milliampere-hours (mAh) |
|---|---|
| 0.1 | 100 |
| 0.25 | 250 |
| 0.5 | 500 |
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 4 | 4000 |
| 5 | 5000 |
| 6 | 6000 |
| 7 | 7000 |
| 8 | 8000 |
| 9 | 9000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 30 | 30,000 |
| 40 | 40,000 |
| 50 | 50,000 |
| 75 | 75,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1000 | 1,000,000 |
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 milliampere-hour?
One-thousandth of an ampere-hour (3.6 C). The standard rating for phone, laptop and small-battery capacity — a phone battery is around 3,000–5,000 mAh.
Frequently asked questions
How many milliampere-hours are in 1 ampere-hour?
1 ampere-hour (Ah) = 1000 milliampere-hours (mAh).
What is the formula to convert ampere-hours to milliampere-hours?
milliampere-hours = ampere-hours × 1000 — multiply the ampere-hour value by 1000.
How do I convert Ah to mAh without a calculator?
Multiply by 1000 for a close estimate. Exact factor: 1 Ah = 1000 mAh.
Is this Ah-to-mAh 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.