Convert Milliampere-hour to Ampere-hour
Use this free converter to change milliampere-hours (mAh) into ampere-hours (Ah). Milliampere-hour and ampere-hour both measure electric charge. As a quick reference, 1 mAh equals 0.001 Ah, and 1 Ah equals 1000 mAh.
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Ampere-hour (Ah)
0.001
1 mAh = 0.001 Ah
Electric Charge conversion table
| Milliampere-hour | Ampere-hour |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
How to convert Milliampere-hour to Ampere-hour
Multiply the milliampere-hour value by 0.001 to get ampere-hours.
- Enter the number of milliampere-hours you want to convert.
- The converter instantly shows the equivalent value in ampere-hours.
- Worked example: 15 mAh × 0.001 = 0.015 Ah.
- Use the swap button to reverse the conversion (ampere-hour to milliampere-hour).
About these units
Milliampere-hour (mAh)
- Definition
- A milliampere-hour (mAh) is one thousandth of an ampere-hour, equal to 3.6 coulombs.
- History
- It became the standard consumer electronics capacity unit as portable devices shrank.
- Current use
- Battery capacity of smartphones, earbuds, and wearables is universally quoted in mAh.
Ampere-hour (Ah)
- Definition
- An ampere-hour (Ah) is a unit of electric charge equal to 3,600 coulombs — the charge transferred by one ampere flowing for one hour.
- History
- It came into widespread use with the commercialisation of lead-acid batteries in the late 19th century.
- Current use
- Ampere-hours rate battery capacity in electric vehicles, uninterruptible power supplies, and solar storage systems.
Frequently asked questions
How many ampere-hours are in a milliampere-hour?
There are 0.001 Ah in 1 mAh. To convert, multiply the number of milliampere-hours by 0.001.
How do I convert milliampere-hours to ampere-hours?
Multiply the milliampere-hour value by 0.001 to get ampere-hours. For example, 10 mAh = 0.01 Ah.
Is this milliampere-hour-to-ampere-hour converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Milliampere-hour to other electric charge units
| Unit | 1 Milliampere-hour equals |
|---|---|
| Coulomb (C) | 3.6 C |
| Millicoulomb (mC) | 3600 mC |
| Microcoulomb (µC) | 3600000 µC |
| Nanocoulomb (nC) | 3600000000 nC |
| Ampere-hour (Ah) | 0.001 Ah |