Milliampere-hours to Ampere-hours Converter mAh → Ah
1 milliampere-hour (mAh) = 0.001 ampere-hours (Ah). Type a value below — the conversion happens instantly, entirely on your device.
1 mAh = 0.001 Ah
1 milliampere-hours = 0.001 ampere-hours
1 × 0.001 = 0.001
1 mAh equals 0.001 Ah, so multiplying by 0.001 converts the value. The result describes the exact same quantity — only the measuring stick changes.
How to convert milliampere-hours to ampere-hours
ampere-hours = milliampere-hours × 0.001 — multiply the milliampere-hour value by 0.001.
Example: 10 mAh = 0.01 Ah.
To convert the other way: milliampere-hours = ampere-hours ÷ 0.001 — or use the dedicated Ah to mAh converter .
Milliampere-hours to Ampere-hours conversion table
| Milliampere-hours (mAh) | Ampere-hours (Ah) |
|---|---|
| 0.1 | 0.0001 |
| 0.25 | 0.00025 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 30 | 0.03 |
| 40 | 0.04 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
About the units
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.
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.
Frequently asked questions
How many ampere-hours are in 1 milliampere-hour?
1 milliampere-hour (mAh) = 0.001 ampere-hours (Ah).
What is the formula to convert milliampere-hours to ampere-hours?
ampere-hours = milliampere-hours × 0.001 — multiply the milliampere-hour value by 0.001.
How do I convert mAh to Ah without a calculator?
Multiply by 0.001 for a close estimate. Exact factor: 1 mAh = 0.001 Ah.
Is this mAh-to-Ah 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.