Watt Hours to Amp Hours Calculator

Use our free Watt Hours to Amp Hours calculator to convert units and easily determine the equivalent amp hours from watt hours.

Formula: Amp Hours = Watt Hours ÷ Voltage

Amp Hours

--

Ah

How to Use the Watt Hours Calculator

Enter the watt hours (Wh) value in the first input field.
Enter the voltage (V) value in the second input field.
Click “Calculate Amp Hours” or simply start typing for instant results.
The converted result will be displayed immediately with calculation breakdown.

Complete List of Conversions

The Formula: Amp Hours = Watt Hours ÷ Voltage

Common Voltage Systems:

12V Systems: Cars, RVs, marine batteries
24V Systems: Larger RVs, commercial vehicles
48V Systems: Solar power systems, electric bikes
3.7V Systems: Lithium-ion batteries, smartphones
1.5V Systems: AA/AAA alkaline batteries

Practical Conversion Examples

12V System Examples:

100 Wh ÷ 12V = 8.333 Ah
500 Wh ÷ 12V = 41.667 Ah
1000 Wh ÷ 12V = 83.333 Ah
1500 Wh ÷ 12V = 125.000 Ah
2000 Wh ÷ 12V = 166.667 Ah

24V System Examples:

100 Wh ÷ 24V = 4.167 Ah
500 Wh ÷ 24V = 20.833 Ah
1000 Wh ÷ 24V = 41.667 Ah
1500 Wh ÷ 24V = 62.500 Ah
2000 Wh ÷ 24V = 83.333 Ah

48V System Examples:

100 Wh ÷ 48V = 2.083 Ah
500 Wh ÷ 48V = 10.417 Ah
1000 Wh ÷ 48V = 20.833 Ah
1500 Wh ÷ 48V = 31.250 Ah
2000 Wh ÷ 48V = 41.667 Ah

3.7V Lithium-ion Examples:

10 Wh ÷ 3.7V = 2.703 Ah
20 Wh ÷ 3.7V = 5.405 Ah
50 Wh ÷ 3.7V = 13.514 Ah
100 Wh ÷ 3.7V = 27.027 Ah
200 Wh ÷ 3.7V = 54.054 Ah

1.5V Alkaline Examples:

1 Wh ÷ 1.5V = 0.667 Ah
2 Wh ÷ 1.5V = 1.333 Ah
5 Wh ÷ 1.5V = 3.333 Ah
10 Wh ÷ 1.5V = 6.667 Ah
15 Wh ÷ 1.5V = 10.000 Ah