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Understanding Your Energy Costs
Rising energy prices make it essential to track your consumption. This calculator helps you determine exactly how much your household appliances cost to run. whether you are calculating the cost of running an Air Conditioner (AC), a gaming PC, a space heater, or a cryptocurrency mining rig. By entering the device's wattage and your local electricity rate (cost per kWh), you will get a precise breakdown. This helps you identify 'energy vampires' in your home and lower your monthly utility bills.
How to Use the Electricity Calculator
- Enter Device Power: Input the power consumption of your device in Watts or Kilowatts. You can refer to the appliance manual or our reference table.
- Enter Usage Time: Specify how many hours and minutes the device is used per day.
- Enter Electricity Cost: Provide the cost of one kilowatt-hour (kWh) from your electricity bill.
- Calculate and View Results: Click the calculate button to see the total consumption and cost for different periods (day, month, year).
Common Appliance Power Consumption
If you don't know the exact power of your device, you can use these average values as a reference.
| Appliance | Average Power (Watts) |
|---|---|
| Refrigerator | 150 - 200 W |
| LED TV (42-inch) | 50 - 100 W |
| Washing Machine (heating) | 2000 - 2500 W |
| Microwave Oven | 1000 - 1500 W |
| Desktop Computer + Monitor | 200 - 500 W |
Core Calculation Formulas
The calculation of electricity consumption and cost is based on two simple formulas. Understanding them will help you better analyze your energy usage.
1. Energy Consumption Formula
To find the total energy used, multiply the power by the usage time. Note that power is measured in kilowatts (1000 Watts = 1 kW).
Energy (kWh) = Power (kW) × Time (hours)
Example: A 100 Watt bulb running for 10 hours uses 1 kWh.
2. Electricity Cost Formula
Once you have the energy consumption in kWh, multiply it by your electricity rate.
Total Cost = Energy (kWh) × Cost per kWh
Frequently Asked Questions
Where can I find the power of my device?
The power rating is usually printed on a label on the back or bottom of the device. Look for a number followed by 'W' (Watts). For example, a phone charger might say 20W, while a heater might say 1500W. If you only see Amps (A) and Volts (V), multiply them together to get Watts (W = V x A).
How can I find my electricity cost (tariff)?
Check your latest electricity bill. Divide the total amount due ($) by the total energy used (kWh) to get your average 'real' cost per kWh, which includes taxes and delivery fees. This gives you a more accurate estimate than just the base rate.