Amp Hours to Watt Hours Converter
Convert battery capacity from Ah to Wh
Battery capacity in amp-hours
Results
Watt Hours
1,280Wh
Total energy capacity
Kilowatt Hours
1.3kWh
Common utility billing unit
Phone Charges
85.0charges
Approx. smartphone charges (15Wh each)
Laptop Runtime
25.6hours
At typical 50W laptop draw
Ah vs Wh Explained
Amp hours (Ah) measure charge capacity—how much current a battery can deliver over time. A 100Ah battery can deliver 100 amps for 1 hour, or 10 amps for 10 hours.
Watt hours (Wh) measure energy capacity—the actual usable energy. This accounts for voltage, making it easier to compare batteries of different voltages.
Formula: Wh = Ah × Voltage