Battery Capacity Converter
Convert between kWh, Ah, Wh, and MJ for easy comparison
Input Value
Enter capacity & unit
+
Voltage
For Ah conversions
=
All Units
kWh, Ah, Wh, MJ
=
Enter values above
Voltage Required for Ah Conversions
Conversion Results
Common Battery Examples
Tesla Model 3 LR
75 kWh • 400V system
~187.5 Ah capacity
~187.5 Ah capacity
Tesla Model S
100 kWh • 400V system
~250 Ah capacity
~250 Ah capacity
BMW iX xDrive50
77 kWh • 400V system
~192.5 Ah capacity
~192.5 Ah capacity
Nissan Leaf e+
58 kWh • 400V system
~145 Ah capacity
~145 Ah capacity
RV Deep Cycle
200 Ah • 12V system
2.4 kWh capacity
2.4 kWh capacity
Solar Storage
100 Ah • 48V system
4.8 kWh capacity
4.8 kWh capacity
Conversion Formulas
kWh ↔ Ah
kWh = (Ah × Voltage) ÷ 1000
Ah = (kWh × 1000) ÷ Voltage
Requires voltage for conversion between energy and charge
kWh ↔ Wh
kWh = Wh ÷ 1000
Wh = kWh × 1000
Simple unit conversion (1000 Wh = 1 kWh)
kWh ↔ MJ
MJ = kWh × 3.6
kWh = MJ ÷ 3.6
Energy conversion (1 kWh = 3.6 MJ)
Wh ↔ Ah
Wh = Ah × Voltage
Ah = Wh ÷ Voltage
Power and charge relationship