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Electricity Cost Calculator

Find out exactly how much it costs to run any electrical appliance. Enter the device wattage, how many hours you use it daily, and your electricity rate to see the energy consumption and cost broken down by day, month, and year.

The formula for electricity cost is:

  • Daily kWh = (Watts x Hours per day) / 1000
  • Monthly cost = Daily kWh x Days x Rate per kWh
  • Annual cost = Daily cost x 365

Common appliance wattages:

  • LED bulb: 10W | Incandescent bulb: 60W
  • Laptop: 50-100W | Desktop PC: 200-500W
  • Refrigerator: 100-400W | Window AC: 500-1500W
  • Space heater: 1500W | Hair dryer: 1200-1800W
  • Washing machine: 500W | Dryer: 2000-5000W

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