Convert mAh to Ah
Convert milliampere-hours to ampere-hours by entering a value below.
How to Convert Milliampere-hours to Ampere-hours
The milliampere-hour and ampere-hour are both units of electric charge. By definition, 1 ampere-hour equals exactly 1000 milliampere-hours. This means to convert milliampere-hours to ampere-hours, you divide by 1000.
Formula
Step-by-Step Example
Convert 5 mAh to ampere-hours:
We need to convert milliampere-hours to ampere-hours
Since 1 Ah = 1000 mAh, divide by 1000
5 ÷ 1000 = 0.005
5 mAh = 0.005 Ah
Milliampere-hour to Ampere-hour Conversion Table
Quick reference table for common milliampere-hour to ampere-hour conversions. Click any value for detailed calculation.
| Milliampere-hours (mAh) | Ampere-hours (Ah) |
|---|---|
| 0.1 mAh | 0.0001 Ah |
| 0.5 mAh | 0.0005 Ah |
| 1 mAh | 0.001 Ah |
| 2 mAh | 0.002 Ah |
| 5 mAh | 0.005 Ah |
| 10 mAh | 0.01 Ah |
| 25 mAh | 0.025 Ah |
| 50 mAh | 0.05 Ah |
| 100 mAh | 0.1 Ah |
About These Units
Milliampere-hour (mAh)
A milliampere-hour (mAh) equals 3.6 coulombs or 0.001 Ah. The standard unit for portable device batteries: smartphones 3,000-5,000 mAh, power banks 10,000-26,800 mAh, wireless earbuds 40-100 mAh. Higher mAh means longer battery life at same current draw.
Ampere-hour (Ah)
An ampere-hour (Ah) equals 3,600 coulombs—the charge delivered by 1 ampere flowing for 1 hour. Standard battery capacity unit: car batteries 50-100 Ah, deep-cycle batteries 100-400 Ah, EV batteries measured in kWh (Ah × voltage). One Ah = 1000 mAh.
Frequently Asked Questions
How do I convert milliampere-hours to ampere-hours?
To convert milliampere-hours to ampere-hours, divide the value by 1000. For example, 10 mAh = 0.01 Ah.
How many ampere-hours are in 1 milliampere-hour?
1 milliampere-hour equals 0.001 ampere-hours.
What is the formula for milliampere-hours to ampere-hours?
The formula is: Ah = mAh ÷ 1000.