Convert Ah to mAh
Convert ampere-hours to milliampere-hours by entering a value below.
How to Convert Ampere-hours to Milliampere-hours
The ampere-hour and milliampere-hour are both units of electric charge. By definition, 1 ampere-hour equals exactly 1000 milliampere-hours. This means to convert ampere-hours to milliampere-hours, you multiply by 1000.
Formula
Step-by-Step Example
Convert 5 Ah to milliampere-hours:
We need to convert ampere-hours to milliampere-hours
Since 1 Ah = 1000 mAh, multiply by 1000
5 × 1000 = 5000
5 Ah = 5000 mAh
Ampere-hour to Milliampere-hour Conversion Table
Quick reference table for common ampere-hour to milliampere-hour conversions. Click any value for detailed calculation.
| Ampere-hours (Ah) | Milliampere-hours (mAh) |
|---|---|
| 0.1 Ah | 100 mAh |
| 0.5 Ah | 500 mAh |
| 1 Ah | 1000 mAh |
| 2 Ah | 2000 mAh |
| 5 Ah | 5000 mAh |
| 10 Ah | 10000 mAh |
| 25 Ah | 25000 mAh |
| 50 Ah | 50000 mAh |
| 100 Ah | 100000 mAh |
About These Units
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.
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.
Frequently Asked Questions
How do I convert ampere-hours to milliampere-hours?
To convert ampere-hours to milliampere-hours, multiply the value by 1000. For example, 10 Ah = 10000 mAh.
How many milliampere-hours are in 1 ampere-hour?
1 ampere-hour equals 1000 milliampere-hours.
What is the formula for ampere-hours to milliampere-hours?
The formula is: mAh = Ah × 1000.