Electricity Cost Calculator

Your details

Select a preset to auto-fill a typical wattage, or choose Custom to enter your own.
The rated power draw of the appliance. Find it on the label or nameplate.
W
Some HVAC equipment is rated in BTU/h or horsepower instead of watts.
The fraction of time the appliance actually draws full power. A refrigerator compressor runs roughly 30-50% of the time even when the appliance is "on". Use 100% for devices that run continuously.
%
How many hours per day the appliance is switched on.
Use 30 for a monthly estimate, 365 for an annual estimate, or any custom period.
Check your electricity bill. The U.S. residential average is about 16-17 cents per kWh (EIA, 2024).
/kWh
Switch on to see how many hours per day you can run this appliance within a monthly cost target.
Currency
Total cost (entered period)
$20.40
Cost per day$0.68
Cost per month$20.70
Cost per year$248.37
Energy used (period)120kWh
Energy per day4kWh/day
Effective power draw1,000W
Cost per day$0.68
Cost per month$20.70
Cost per year$248.37

About 0.68 per day (248 per year).

  • This appliance uses 4.000 kWh per day at 1000 W effective draw.
  • Over a full year, that is about 248 in electricity, a useful benchmark for deciding whether to upgrade to a more efficient model.
  • Standby and always-on loads add up: even 10 watts left on around the clock costs over 15 per year at a typical U.S. rate.

Next stepFind the wattage on the appliance label, measure actual consumption with a plug-in energy monitor for cycling devices, and check your bill for the exact per-kWh rate.

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