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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

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