Electricity Cost Calculator
NewCalculationEnter a device's wattage, the hours used per day, days per month and your kWh price. The tool estimates monthly and yearly kilowatt-hours plus the expected cost in both periods. Handy for budgeting and for finding the biggest energy consumers at home.
Fill in all four fields to estimate your usage and cost.
Consumption = watts divided by 1000 times hours times days. Multiply by your kWh price for the bill estimate.
How is consumption estimated?
Watts are converted to kilowatts first, then multiplied by the hours used per day and the days used per month. Yearly figures are simply the monthly ones multiplied by 12. This is the same formula most energy meters use.
How do I read the cost results?
Multiply your monthly kilowatt-hours by the price you pay per kWh. The tool does this for you and shows both monthly and yearly costs, making it easy to compare appliances like fridges, TVs or heaters.
Frequently Asked Questions
What is Electricity Cost Calculator?
Estimate monthly and yearly power usage and cost for any appliance.
How do I use Electricity Cost Calculator?
Type or paste your data into the field on this page and press the button. The result is calculated instantly in your browser — nothing is uploaded.
Is Electricity Cost Calculator free?
Yes, Electricity Cost Calculator is completely free. No signup, no downloads and no usage limits.
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