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WattSimple

Electricity Cost Calculator

Find out what any appliance costs to run. Pick it from the list or enter its wattage, set how long it runs, and see the cost per day, month, and year at your electricity rate — pick your state to fill the rate automatically.

Cost to run

$722/yr

Per day
$1.98
Per month
$60.15
Energy per year
4,380 kWh

Cost = power (kW) × hours × days × your rate. Preset wattages are typical values — enter your appliance's actual watts (often on a label or nameplate) for a precise figure.

Frequently asked questions

Multiply the appliance's power in kilowatts (watts ÷ 1,000) by the hours it runs, then by your electricity rate. For example, a 1,500-watt space heater for 8 hours a day at $0.16/kWh costs about $1.92 a day, or roughly $58 a month. This calculator does the math and shows daily, monthly, and yearly cost at once.

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