Convert average device wattage and run time into kilowatt-hours and an estimated bill contribution.
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My workspace →A device averaging 120 W for 5 hours a day uses 0.6 kWh daily. Over 30 days, that is 18 kWh or $2.70 at the illustrative $0.15/kWh rate.
Energy = watts ÷ 1,000 × hours/day × days Cost = energy × price/kWh
The starter inputs above produce:
Estimated electricity cost: $2.70
Change the inputs to match your own situation. The result is an estimate or text transformation, not a substitute for reviewing your source data.
The calculator expects actual average consumption. A power supply’s maximum capacity is not the same as the device’s average draw.
Yes. Set days to 1 and enter the number of operating hours for that day.
No. This release runs without an account, API key or payment. Saving a favorite stores only the tool’s identifier in this browser, not your inputs.