Convert Milliampere-hour to Coulomb
Use this free converter to change milliampere-hours (mAh) into coulombs (C). Milliampere-hour and coulomb both measure electric charge. As a quick reference, 1 mAh equals 3.6 C, and 1 C equals 0.27777778 mAh.
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Coulomb (C)
3.6
1 mAh = 3.6 C
Electric Charge conversion table
| Milliampere-hour | Coulomb |
|---|---|
| 0.01 | 0.036 |
| 0.1 | 0.36 |
| 0.5 | 1.8 |
| 1 | 3.6 |
| 2 | 7.2 |
| 3 | 10.8 |
| 5 | 18 |
| 10 | 36 |
| 20 | 72 |
| 25 | 90 |
| 50 | 180 |
| 100 | 360 |
| 1,000 | 3600 |
How to convert Milliampere-hour to Coulomb
Multiply the milliampere-hour value by 3.6 to get coulombs.
- Enter the number of milliampere-hours you want to convert.
- The converter instantly shows the equivalent value in coulombs.
- Worked example: 15 mAh × 3.6 = 54 C.
- Use the swap button to reverse the conversion (coulomb to milliampere-hour).
About these units
Milliampere-hour (mAh)
- Definition
- A milliampere-hour (mAh) is one thousandth of an ampere-hour, equal to 3.6 coulombs.
- History
- It became the standard consumer electronics capacity unit as portable devices shrank.
- Current use
- Battery capacity of smartphones, earbuds, and wearables is universally quoted in mAh.
Coulomb (C)
- Definition
- The coulomb (C) is the SI unit of electric charge, defined as the charge transported by one ampere of current in one second.
- History
- Named after French physicist Charles-Augustin de Coulomb, it was formalised with the SI system and redefined in 2019 in terms of the elementary charge.
- Current use
- Coulombs are used in electrochemistry, capacitor ratings, and electrostatics calculations.
Frequently asked questions
How many coulombs are in a milliampere-hour?
There are 3.6 C in 1 mAh. To convert, multiply the number of milliampere-hours by 3.6.
How do I convert milliampere-hours to coulombs?
Multiply the milliampere-hour value by 3.6 to get coulombs. For example, 10 mAh = 36 C.
Is this milliampere-hour-to-coulomb converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Milliampere-hour to other electric charge units
| Unit | 1 Milliampere-hour equals |
|---|---|
| Coulomb (C) | 3.6 C |
| Millicoulomb (mC) | 3600 mC |
| Microcoulomb (µC) | 3600000 µC |
| Nanocoulomb (nC) | 3600000000 nC |
| Ampere-hour (Ah) | 0.001 Ah |