Milliamp-hours to watt-hours
Type a value in mAh to get it in Wh instantly.
That's 1.23× as big as a phone battery, while a 10,000 mAh power bank is 2× bigger. That is about 1.233 full phone charges.
Convert the other way: Wh to mAh
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 mAh 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 mAh = 18.5 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
mAh to Wh conversion table
| mAh | Wh |
|---|---|
| 500 mAh | 1.85 Wh |
| 1,000 mAh | 3.7 Wh |
| 2,000 mAh | 7.4 Wh |
| 3,000 mAh | 11.1 Wh |
| 4,000 mAh | 14.8 Wh |
| 5,000 mAh | 18.5 Wh |
| 6,000 mAh | 22.2 Wh |
| 8,000 mAh | 29.6 Wh |
| 10,000 mAh | 37 Wh |
| 15,000 mAh | 55.5 Wh |
| 20,000 mAh | 74 Wh |
| 30,000 mAh | 111 Wh |
Wh to mAh conversion table
| Wh | mAh |
|---|---|
| 500 Wh | 135,135 mAh |
| 1,000 Wh | 270,270 mAh |
| 2,000 Wh | 540,541 mAh |
| 3,000 Wh | 810,811 mAh |
| 4,000 Wh | 1,081,080 mAh |
| 5,000 Wh | 1,351,350 mAh |
| 6,000 Wh | 1,621,620 mAh |
| 8,000 Wh | 2,162,160 mAh |
| 10,000 Wh | 2,702,700 mAh |
| 15,000 Wh | 4,054,050 mAh |
| 20,000 Wh | 5,405,410 mAh |
| 30,000 Wh | 8,108,110 mAh |
Quick answers
Quick answers
- How many Wh is 1 mAh?
- 1 mAh is 0.0037 Wh.
- How many Wh is 10 mAh?
- 10 mAh is 0.037 Wh.
- How many Wh is 5,000 mAh?
- 5,000 mAh is 18.5 Wh.
The units
About these units
Milliamp-hours (mAh)
Charge, not energy: how many milliamps the cell can deliver for an hour. Needs a voltage to mean anything.
Watt-hours (Wh)
The honest measure of a battery: energy, not charge. Airlines and regulators use it.
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