# How to convert Wh to mAh

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

### Watt-hour to milliampere-hour calculation formula

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

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

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

milliamp-hour = watt-hour × 1000 / V

or

mAh = Wh × 1000 / V

#### Example

Find the electric charge in milliamp-hour when the energy consumption is 3 watt-hour and the voltage is 5 volts.

The electric charge Q is equal to 3 watt-hour times 1000, divided by 5 volts:

*Q* = 3Wh × 1000 / 5V = 600mAh