How to convert ampere-hours to milliampere-hours
mAh = Ah × 1,000Multiply the value in ampere-hours by 1,000. To go the other way, multiply by 0.001 (or divide by 1,000).
An ampere-hour is larger than a milliampere-hour: one ampere-hour contains 1,000 milliampere-hours.
Worked examples
- 1 ampere-hour1 Ah × 1,000 = 1,000 mAh
- 5 ampere-hours5 Ah × 1,000 = 5,000 mAh
- 10 ampere-hours10 Ah × 1,000 = 10,000 mAh
- 20 ampere-hours20 Ah × 1,000 = 20,000 mAh
- 100 ampere-hours100 Ah × 1,000 = 100,000 mAh
Ampere-hours to milliampere-hours conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Ampere-hours (Ah) | Milliampere-hours (mAh) |
|---|---|
| 0.1 Ah | 100 mAh |
| 0.25 Ah | 250 mAh |
| 0.5 Ah | 500 mAh |
| 1 Ah | 1,000 mAh |
| 2 Ah | 2,000 mAh |
| 3 Ah | 3,000 mAh |
| 4 Ah | 4,000 mAh |
| 5 Ah | 5,000 mAh |
| 6 Ah | 6,000 mAh |
| 7 Ah | 7,000 mAh |
| 8 Ah | 8,000 mAh |
| 9 Ah | 9,000 mAh |
| 10 Ah | 10,000 mAh |
| Ampere-hours (Ah) | Milliampere-hours (mAh) |
|---|---|
| 12 Ah | 12,000 mAh |
| 15 Ah | 15,000 mAh |
| 20 Ah | 20,000 mAh |
| 25 Ah | 25,000 mAh |
| 30 Ah | 30,000 mAh |
| 40 Ah | 40,000 mAh |
| 50 Ah | 50,000 mAh |
| 75 Ah | 75,000 mAh |
| 100 Ah | 100,000 mAh |
| 250 Ah | 250,000 mAh |
| 500 Ah | 500,000 mAh |
| 1,000 Ah | 1,000,000 mAh |
About the units
Ampere-hour (Ah)
3,600 coulombs. Car and deep-cycle batteries are rated in Ah.
Milliampere-hour (mAh)
3.6 coulombs. Phone and power-bank batteries are rated in mAh.
Frequently asked questions
How many milliampere-hours are in one ampere-hour?
There are 1,000 milliampere-hours in one ampere-hour, and this value is exact by definition.
How do I convert ampere-hours to milliampere-hours?
Multiply the number of ampere-hours by 1,000. For example, 10 Ah × 1,000 = 10,000 mAh.
How many ampere-hours are in one milliampere-hour?
One milliampere-hour equals 0.001 ampere-hours. That is the reverse factor, 1 ÷ 1,000.
What is 10 ampere-hours in milliampere-hours?
10 Ah = 10,000 mAh.
Is this Ah to mAh converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.