kWh to Ah Converter
Convert energy capacity in kilowatt-hours (kWh) to battery charge capacity in amp-hours (Ah). You must provide the battery voltage.
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Kilowatt-hour ↔ Ampere-hour
kWh
Ah
Calculation Formula
(100 kWh × 1000) ÷ 12 V = 8,333.33 Ah
Worked Example
Convert 5 kWh to Ah at 12V:
(5 kWh × 1,000) ÷ 12 V = 416.67 Ah
Kilowatt-hour to Ampere-hour Table
| kWh | Ah (12V) | Ah (24V) | Ah (48V) |
|---|---|---|---|
| 1 kWh | 83.333 Ah | 41.667 Ah | 20.833 Ah |
| 2.5 kWh | 208.33 Ah | 104.17 Ah | 52.083 Ah |
| 5 kWh | 416.67 Ah | 208.33 Ah | 104.17 Ah |
| 10 kWh | 833.33 Ah | 416.67 Ah | 208.33 Ah |
| 15 kWh | 1,250 Ah | 625 Ah | 312.5 Ah |
| 20 kWh | 1,666.67 Ah | 833.33 Ah | 416.67 Ah |
| 30 kWh | 2,500 Ah | 1,250 Ah | 625 Ah |
Understanding the Conversion
Converting from kWh to Ah is standard practice when sizing deep cycle batteries or battery banks for solar and home backup systems.
Size your backup power system.
Use these converted ratings to determine exactly what size generator or battery bank you need.