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Electricity Usage Calculator

Calculate how much your home appliances cost to run.

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Average US rate is $0.15 - $0.20 per kWh.

How to Calculate Electricity Cost?

Understanding your power bill starts with knowing how much energy individual appliances consume. Our Free Electricity Usage Calculator takes the guesswork out of your monthly expenses by applying standard power consumption formulas.

The Electricity Calculation Formula:

  1. Convert Watts to Kilowatts (kW): Most appliances are listed in Watts (W). Divide the wattage by 1,000 to get Kilowatts (e.g., a 1500W space heater is 1.5 kW).
  2. Calculate Kilowatt-Hours (kWh): Multiply the Kilowatts by the number of hours you use the appliance per day. (e.g., 1.5 kW × 4 hours = 6 kWh per day).
  3. Calculate the Cost: Multiply the daily kWh by your local utility company's electricity rate (cost per kWh) to find your total daily cost.

Frequently Asked Questions (FAQ)

Where can I find the wattage of my appliance?

You can usually find the wattage on the manufacturer's label, which is stamped on the back or bottom of the appliance. It is often listed with a "W" (e.g., 1200W). If only Amps (A) and Volts (V) are listed, multiply them together to find the Watts (Amps × Volts = Watts).

What is a Kilowatt-Hour (kWh)?

A Kilowatt-Hour is a measure of electrical energy equivalent to a power consumption of 1,000 watts for one hour. It is the standard billing unit used by electric utility companies worldwide to calculate your monthly bill.

Which home appliances use the most electricity?

Heating and cooling systems (like central AC and electric heaters) typically consume the most power. Other high-usage appliances include electric water heaters, clothes dryers, refrigerators, and electric ovens.