How to convert milliampere-hours to ampere-hours
Ah = mAh × 0.001Multiply the value in milliampere-hours by 0.001. To go the other way, multiply by 1,000 (or divide by 0.001).
A milliampere-hour is smaller than an ampere-hour: it takes 1,000 milliampere-hours to make one ampere-hour.
Worked examples
- 1 milliampere-hour1 mAh × 0.001 = 0.001 Ah
- 5 milliampere-hours5 mAh × 0.001 = 0.005 Ah
- 10 milliampere-hours10 mAh × 0.001 = 0.01 Ah
- 20 milliampere-hours20 mAh × 0.001 = 0.02 Ah
- 100 milliampere-hours100 mAh × 0.001 = 0.1 Ah
Milliampere-hours to ampere-hours conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Milliampere-hours (mAh) | Ampere-hours (Ah) |
|---|---|
| 0.1 mAh | 0.0001 Ah |
| 0.25 mAh | 0.00025 Ah |
| 0.5 mAh | 0.0005 Ah |
| 1 mAh | 0.001 Ah |
| 2 mAh | 0.002 Ah |
| 3 mAh | 0.003 Ah |
| 4 mAh | 0.004 Ah |
| 5 mAh | 0.005 Ah |
| 6 mAh | 0.006 Ah |
| 7 mAh | 0.007 Ah |
| 8 mAh | 0.008 Ah |
| 9 mAh | 0.009 Ah |
| 10 mAh | 0.01 Ah |
| Milliampere-hours (mAh) | Ampere-hours (Ah) |
|---|---|
| 12 mAh | 0.012 Ah |
| 15 mAh | 0.015 Ah |
| 20 mAh | 0.02 Ah |
| 25 mAh | 0.025 Ah |
| 30 mAh | 0.03 Ah |
| 40 mAh | 0.04 Ah |
| 50 mAh | 0.05 Ah |
| 75 mAh | 0.075 Ah |
| 100 mAh | 0.1 Ah |
| 250 mAh | 0.25 Ah |
| 500 mAh | 0.5 Ah |
| 1,000 mAh | 1 Ah |
About the units
Milliampere-hour (mAh)
3.6 coulombs. Phone and power-bank batteries are rated in mAh.
Ampere-hour (Ah)
3,600 coulombs. Car and deep-cycle batteries are rated in Ah.
Frequently asked questions
How many ampere-hours are in one milliampere-hour?
There are 0.001 ampere-hours in one milliampere-hour, and this value is exact by definition.
How do I convert milliampere-hours to ampere-hours?
Multiply the number of milliampere-hours by 0.001. For example, 10 mAh × 0.001 = 0.01 Ah.
How many milliampere-hours are in one ampere-hour?
One ampere-hour equals 1,000 milliampere-hours. That is the reverse factor, 1 ÷ 0.001.
What is 10 milliampere-hours in ampere-hours?
10 mAh = 0.01 Ah.
Is this mAh to Ah 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.