🔋 Energy Storage
Battery Capacity Calculator
Calculate battery capacity in Watt-hours (Wh) and Amp-hours (Ah).
Calculation Mode
Watt-hours (Wh)
Wh
Total energy capacity in Watt-hours
Voltage (V)
V
Nominal battery voltage
Capacity
0%
Capacity
0 Wh
total energy
Watt-hours
0 Wh
Amp-hours
0 Ah
Voltage
0 V
Mode
Wh → Ah
📐 Battery Formulas
Wh = Ah × V
Watt-hours = Amp-hours × Voltage
Ah = Wh ÷ V
Amp-hours = Watt-hours ÷ Voltage
Runtime = Wh ÷ W
Hours = Watt-hours ÷ Watts
W = V × A
Watts = Volts × Amps
📊 Capacity Breakdown
| Parameter | Value | Description |
|---|
How the formula works
Wh = Ah × V | Ah = Wh ÷ V | Runtime = Wh ÷ Power (W)
- Watt-hour (Wh) = Measure of total energy capacity
- Amp-hour (Ah) = Measure of charge capacity
- Voltage (V) = Nominal battery voltage
- Runtime = How long a device can run on a full battery
- Higher voltage batteries have more energy for the same Ah