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Calculate the Costs to Use Electricity

Look around you. What electrical device is on? Do you know much it ’ s costing you? This page will help you to find out.
Examine each device that ’ s turned on around you and type its power (in Watts) into this box. (If you want to include more than one device, just separate each device ’ s power intake with a comma.)

Example, your TV is on. Type: 115
Example, your laser printer and toaster are on. Type: 580,1200


How long has each device been on for?

How much does it cost per kilowatt-hour (kWh)?
$
($0.05 per kiloWatt-hour is a "ball park" cost for electricity in the United States)
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