Estimate appliance running costs based on wattage and usage. Our tool is 100% free, private, and runs entirely in your browser.
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Electricity Cost
Calculate the running cost of any appliance. Enter wattage, hours of use, and your local electricity rate to see daily, monthly, and yearly costs instantly.
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About Electricity Cost
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Open the Electricity Cost page.
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Frequently Asked Questions
Most appliances have a label on the back or bottom that lists the power consumption in Watts (W). If you only see Volts and Amps, multiply them (V * A = Watts).
In the US, the average residential electricity rate is approximately $0.15 - $0.23 per kWh, but varies significantly by region.
This calculator uses the 'on' wattage you provide. many devices draw 1-10W even when turned off if they stay plugged in.
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