Things You'll Need

Instructions

1

Find the number of watts you used during any period on your electric bill. For example, a house used 70,000 watts during the month.
2

Count the number of rooms in your residence. In the example, you have six rooms.
3

Divide the number of watts you used by the number of rooms you have. In the example, 70,000 watts divided by six rooms equals 11,666.67 watts per room.