Power Cost Estimator

Calculate how much it costs to run any appliance based on wattage and usage time.

Estimated Cost
$0.01 Per Day
$0.38 Per Month
$4.67 Per Year

Calculation Details

10W × 8 hours = 0.08 kWh/day
0.08 kWh × $0.16/kWh = $0.01/day

Enter Appliance Details

Check the appliance label or manual for wattage.

US average is ~$0.16/kWh. Check your electric bill for your rate.

Common Appliance Wattages

Reference these typical wattages for common appliances:

LED Light Bulb 10W Laptop 50W Desktop Computer 200W TV (50") 120W Refrigerator 150W Microwave 1000W Space Heater 1500W Air Conditioner (Window) 1200W Hair Dryer 1500W Washing Machine 500W

Understanding Electricity Costs

  • Wattage (W) measures how much power an appliance uses at any moment.
  • Kilowatt-hour (kWh) is what you pay for—1,000 watts used for 1 hour.
  • Running costs add up—a 1500W space heater running 8 hours daily costs ~$58/month.
  • Check your bill for your actual rate—it varies by region and provider.

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