mAh to Wh Calculator
Convert milliamp-hours to watt-hours.
Free · instant · private
mAh
Volts
Wh
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Reference & Formula
Engineering referenceFormula
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