Coulombs to milliamp-hours
Type a value in C to get it in mAh instantly.
277.8mAh
That's 67× as much charge as a lightning strike, while a phone battery is 18× more. That is about 6.242×10²¹ electrons.
Convert the other way: mAh to C
What it means
How much charge is that?
Charge is not energy: to get watt-hours from mAh you also need the voltage.
The math
How to convert C to mAh
To convert coulombs to milliamp-hours, multiply by 0.277778.
Example: 1,000 C × 0.277778 = 277.778 mAh.
In the other direction, 1 mAh = 3.6 C.
Every unit
Your charge in every unit
Tables
C to mAh conversion table
| C | mAh |
|---|---|
| 10 C | 2.77778 mAh |
| 50 C | 13.8889 mAh |
| 100 C | 27.7778 mAh |
| 250 C | 69.4444 mAh |
| 500 C | 138.889 mAh |
| 1,000 C | 277.778 mAh |
| 2,000 C | 555.556 mAh |
| 3,000 C | 833.333 mAh |
| 5,000 C | 1,388.89 mAh |
| 10,000 C | 2,777.78 mAh |
mAh to C conversion table
| mAh | C |
|---|---|
| 10 mAh | 36 C |
| 50 mAh | 180 C |
| 100 mAh | 360 C |
| 250 mAh | 900 C |
| 500 mAh | 1,800 C |
| 1,000 mAh | 3,600 C |
| 2,000 mAh | 7,200 C |
| 3,000 mAh | 10,800 C |
| 5,000 mAh | 18,000 C |
| 10,000 mAh | 36,000 C |
Quick answers
Quick answers
- How many mAh is 1 C?
- 1 C is 0.277778 mAh.
- How many mAh is 10 C?
- 10 C is 2.77778 mAh.
- How many mAh is 1,000 C?
- 1,000 C is 277.778 mAh.
The units
About these units
Coulombs (C)
The SI unit: one amp flowing for one second.
Milliamp-hours (mAh)
3.6 coulombs. Phone and power bank capacity is printed in mAh.
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