Examples of common power usages of electric devices

You can easily convert yourself between Watt and Watt-hours. A Watt-hour (Wh) is simply is equivalent to the energy consumed of one watt for one hour. Example: Your lights, which consume 10 Watt are on for 3 hours. They comsume 10 W * 3 h = 30 Wh.

Power usage examples