Have you ever wondered how much money that light left on all night is costing you in bills? Or that stereo that just seems to never stop playing from the kids room? How about which of your household appliances contribute the most to your monthly energy bills? 'Watt-U-Use' Casa energy calculator shows you the costs of running a variety of household appliances, so you can budget for your next Utilidad bills. Calculates by any two of wattage, voltage, amperage. Shows a comparison between the least and most expensive appliance. Calculates cost per hour and cost per day for each appliance. Calculates an estimate for the next Utilidad bill. Shows your estimated energy bill for the month, quarter and year. Lets you add any appliance (lights, stereo, washingmachine etc). Allows for any discounts or rebates on energy bills. Calculates kilowatt hourly charge rates. Fully customizable.