# mAh to Wh conversion calculator

Electric charge in milliamp-hours (mAh) to energy in Watt-hours (Wh) calculator.

Enter the electric charge in milliamp-hours (mAh) and voltage in volts (V) and
press the *Calculate* button:

### milliamp-hours to watt-hours calculation

The energy *E*_{(Wh)} in watt-hours is equal to the electric charge *Q*_{(mAh) }in milliamp-hours times the
voltage * V*_{(V) }in volts (V) divided by 1000:

*E*_{(Wh)} = *Q*_{(mAh)} × *V*_{(V)}* */* *1000

So watt-hours is equal to milliamp-hours times volts divided by 1000:

watt-hours = milliamp-hours × volts / 1000

or

Wh = mAh × V / 1000