How to convert mAh to Wh

How to convert milliamp-hour (mAh) to watt-hour (Wh).

milliamper-hour to watt-hour calculation

The energy E(Wh) in watt-hours is equal to the electric charge Q(mAh) in milliampere-hour times the voltage V(V) in volts (V) divided by 1000:

E(Wh) = Q(mAh) × V(V) / 1000

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

watt-hours = milliampere-hours × volts / 1000


Wh = mAh × V / 1000


Find the energy in watt-hours when the electric charge is 300 milliampere-hour and the voltage is 5 volts.

The energy E is equal to 300 milliamp-hour times 5 volts divided by 1000:

E = 300mAh × 5V / 1000 = 1.5Wh


How to convert Wh to mAh ►


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