Wh to Ah Calculator
Convert energy in Watt-hours (Wh) to electric charge in Amp-hours (Ah).
Wh
V
How to Convert Wh to Ah
To convert Watt-hours (Wh) to Amp-hours (Ah), you need to divide the energy in Watt-hours by the voltage in Volts.
Formula
Q(Ah) = E(Wh) / V(V)
Calculation Example
Question: A battery stores 1200 Wh of energy at 12 V. What is its capacity in Amp-hours?
Answer:
Q = 1200 Wh / 12 V = 100 Ah
Common Battery Energy Ratings
| Battery Type | Energy (Wh) | Voltage (V) | Capacity (Ah) |
|---|---|---|---|
| Laptop Battery | 50 Wh | 11.1 V | 4.5 Ah |
| E-Bike Battery | 500 Wh | 36 V | 13.9 Ah |
| Home Battery | 13500 Wh | 48 V | 281 Ah |