Amp-hours to watt-hours
Type a value in Ah to get it in Wh instantly.
That's 1.37× as big as a home battery, while an electric car battery is 3.2× bigger. That is about 1,233 full phone charges.
Convert the other way: Wh to Ah
What it means
How much energy is that?
Airlines limit spare batteries to 100 Wh without approval, which is why the Wh figure matters.
The math
How to convert Ah to Wh
Charge becomes energy only once you know the voltage: Wh = mAh × V ÷ 1000. The figures below use the voltage selected above.
Example: 5,000 Ah = 18,500 Wh.
The table below assumes Phone cell (3.7 V). Change the voltage above and every number updates.
Every unit
Your capacity in every unit
Tables
Ah to Wh conversion table
| Ah | Wh |
|---|---|
| 500 Ah | 1,850 Wh |
| 1,000 Ah | 3,700 Wh |
| 2,000 Ah | 7,400 Wh |
| 3,000 Ah | 11,100 Wh |
| 4,000 Ah | 14,800 Wh |
| 5,000 Ah | 18,500 Wh |
| 6,000 Ah | 22,200 Wh |
| 8,000 Ah | 29,600 Wh |
| 10,000 Ah | 37,000 Wh |
| 15,000 Ah | 55,500 Wh |
| 20,000 Ah | 74,000 Wh |
| 30,000 Ah | 111,000 Wh |
Wh to Ah conversion table
| Wh | Ah |
|---|---|
| 500 Wh | 135.135 Ah |
| 1,000 Wh | 270.27 Ah |
| 2,000 Wh | 540.541 Ah |
| 3,000 Wh | 810.811 Ah |
| 4,000 Wh | 1,081.08 Ah |
| 5,000 Wh | 1,351.35 Ah |
| 6,000 Wh | 1,621.62 Ah |
| 8,000 Wh | 2,162.16 Ah |
| 10,000 Wh | 2,702.7 Ah |
| 15,000 Wh | 4,054.05 Ah |
| 20,000 Wh | 5,405.41 Ah |
| 30,000 Wh | 8,108.11 Ah |
Quick answers
Quick answers
- How many Wh is 1 Ah?
- 1 Ah is 3.7 Wh.
- How many Wh is 10 Ah?
- 10 Ah is 37 Wh.
- How many Wh is 5,000 Ah?
- 5,000 Ah is 18,500 Wh.
The units
About these units
Amp-hours (Ah)
A thousand milliamp-hours. Car and leisure batteries are rated in Ah.
Watt-hours (Wh)
The honest measure of a battery: energy, not charge. Airlines and regulators use it.
Keep going