Coulombs to amp-hours
Type a value in C to get it in Ah instantly.
0.2778Ah
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: Ah 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 Ah
To convert coulombs to amp-hours, multiply by 0.000277778.
Example: 1,000 C × 0.000277778 = 0.277778 Ah.
In the other direction, 1 Ah = 3,600 C.
Every unit
Your charge in every unit
Tables
C to Ah conversion table
| C | Ah |
|---|---|
| 10 C | 0.00277778 Ah |
| 50 C | 0.0138889 Ah |
| 100 C | 0.0277778 Ah |
| 250 C | 0.0694444 Ah |
| 500 C | 0.138889 Ah |
| 1,000 C | 0.277778 Ah |
| 2,000 C | 0.555556 Ah |
| 3,000 C | 0.833333 Ah |
| 5,000 C | 1.38889 Ah |
| 10,000 C | 2.77778 Ah |
Ah to C conversion table
| Ah | C |
|---|---|
| 10 Ah | 36,000 C |
| 50 Ah | 180,000 C |
| 100 Ah | 360,000 C |
| 250 Ah | 900,000 C |
| 500 Ah | 1,800,000 C |
| 1,000 Ah | 3,600,000 C |
| 2,000 Ah | 7,200,000 C |
| 3,000 Ah | 10,800,000 C |
| 5,000 Ah | 18,000,000 C |
| 10,000 Ah | 36,000,000 C |
Quick answers
Quick answers
- How many Ah is 1 C?
- 1 C is 0.000277778 Ah.
- How many Ah is 10 C?
- 10 C is 0.00277778 Ah.
- How many Ah is 1,000 C?
- 1,000 C is 0.277778 Ah.
The units
About these units
Coulombs (C)
The SI unit: one amp flowing for one second.
Amp-hours (Ah)
3,600 coulombs. Car and leisure batteries are rated in amp-hours.
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