Watt-hours and amp-hours are both units for electric charge.
1 watt-hour is defined as 1 watt of power expended for 1 hour.
1 amp hour is defined as 1 amp of current expended for 1 hour.
How do you convert watt-hours to amp-hours?
It is possible to convert watt-hours to amp-hours using the following formula:
Watt-hours = Amp-hours * Volts
To calculate amp-hours from watt-hours, we need to rearrange this equation to:
Amp-hours = Watt-hours / Volts
For the watt-hour to amp-hour conversion, you also need voltage (V).
Here is a nifty calculator that converts watt-hours to amp-hours. Further on, you’ll also find a chart of Wh to Ah for 120V and 220V.
Wh To Ah Calculator
Watt-Hours To Amp-Hours Conversion Chart
| Watt-Hours (Wh) | Amp-Hours (at 120V): | Amp-Hours (at 220V): |
|---|---|---|
| 1 amp hour to watt hours: | 0.008 Ah | 0.005 Ah |
| 10 amp hours to watt hours: | 0.08 Ah | 0.05 Ah |
| 20 amp hours to watt hours: | 0.17 Ah | 0.09 Ah |
| 30 amp hours to watt hours: | 0.25 Ah | 0.14 Ah |
| 40 amp hours to watt hours: | 0.33 Ah | 0.18 Ah |
| 50 amp hours to watt hours: | 0.42 Ah | 0.23 Ah |
| 100 amp hours to watt hours: | 0.83 Ah | 0.45 Ah |
| 200 amp hours to watt hours: | 1.67 Ah | 0.91 Ah |
| 500 amp hours to watt hours: | 4.17 Ah | 2.27 Ah |
| 1000 amp hours to watt hours: | 8.33 Ah | 4.55 Ah |