mAh to Wh Calculator
Convert milliamp-hours to watt-hours.
mAh
Volts
Wh
Reference & Formula
Formula
Wh = mAh × V ÷ 1000
Explained
Watt-hours equals milliamp-hours times voltage divided by 1000. Convert mAh to Ah first, then multiply by voltage.
Used For
Small battery comparison, IoT sensor battery sizing