Convert mAh to Coulombs
Enter the number of milliampere-hours that you want to convert to coulombs.
How to Convert Milliampere-hours to Coulombs
The milliampere-hour and coulomb are both units of electric charge. 1 milliampere-hour equals 3.6 coulombs. This means to convert milliampere-hours to coulombs, you multiply by 3.6.
Formula
Step-by-Step Example
Convert 5 mAh to coulombs:
We need to convert milliampere-hours to coulombs
Since 1 mAh = 3.6 C, multiply by 3.6
5 × 3.6 = 18
5 mAh = 18 C
Milliampere-hour to Coulomb Conversion Table
Quick reference table for common milliampere-hour to coulomb conversions. Click any value for detailed calculation.
| Milliampere-hours (mAh) | Coulombs (C) |
|---|---|
| 1 mAh | 3.6 C |
| 2 mAh | 7.2 C |
| 5 mAh | 18 C |
| 10 mAh | 36 C |
| 15 mAh | 54 C |
| 20 mAh | 72 C |
| 25 mAh | 90 C |
| 50 mAh | 180 C |
| 100 mAh | 360 C |
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.
Coulomb (C)
The coulomb (C) is the SI unit of electric charge, defined as the charge transferred by 1 ampere flowing for 1 second. One coulomb equals 6.242×10¹⁸ elementary charges (electrons or protons). Named after physicist Charles-Augustin de Coulomb. Formula: Q = I × t (charge = current × time).
Frequently Asked Questions
How do I convert milliampere-hours to coulombs?
To convert milliampere-hours to coulombs, multiply the value by 3.6. For example, 10 mAh = 36 C.
How many coulombs are in 1 milliampere-hour?
1 milliampere-hour equals 3.6 coulombs.
What is the formula for milliampere-hours to coulombs?
The formula is: C = mAh × 3.6.