Electricity Cost Calculator: Appliance kWh & Running Cost

Appliance

Typical running watts: Refrigerator ≈ 550 W; Microwave ≈ 800 W; Electric oven / stove ≈ 3,500 W; Television ≈ 125 W; LED light bulb ≈ 10 W; Space heater ≈ 1,500 W; Central air conditioner ≈ 3,500 W; Window AC unit ≈ 950 W; Washing machine ≈ 900 W; Electric clothes dryer ≈ 3,250 W; Computer ≈ 50 W; Hair dryer ≈ 1,750 W; EV charger, Level 2 ≈ 7,200 W; Dishwasher ≈ 1,800 W; Electric tank water heater ≈ 4,500 W.

Power draw

Leave 0 to use the typical wattage for the selected appliance. Check the nameplate label or manual for the exact figure.

Hours used per day

hrs/day

Days used per week

days/wk

Cost per month

Television · 125 W × 5 h/day, 7 days/wk · $0.182/kWh

Cost per day of use0.63 kWh each day it runs

Cost per year228 kWh per year

Energy per monthAverage 0.63 kWh per calendar day

Key takeaways

Using it 1 hour less per day would save about $8.30 per year.
The same use costs $27.38 a year at $0.12/kWh and $79.84 at $0.35/kWh.

Yearly cost at different electricity rates

Detailed numbers

Yearly cost at different electricity rates
Rate	Per month	Per year
$0.12/kWh	$2.28	$27.38
$0.15/kWh	$2.85	$34.22
$0.182/kWh	$3.46	$41.52
$0.25/kWh	$4.75	$57.03
$0.35/kWh	$6.65	$79.84

US residential rates range from about 11¢ to over 40¢ per kWh depending on state and utility.

Typical appliance wattage
Appliance	Range	Used by this calculator
Refrigerator	300 – 800 W	550 W
Microwave	600 – 1,000 W	800 W
Electric oven / stove	2,000 – 5,000 W	3,500 W
Television	50 – 200 W	125 W
LED light bulb	10 – 60 W	10 W
Space heater	1,500 W	1,500 W
Central air conditioner	3,000 – 4,000 W	3,500 W
Window AC unit	500 – 1,400 W	950 W
Washing machine	400 – 1,400 W	900 W
Electric clothes dryer	1,500 – 5,000 W	3,250 W
Computer	30 – 70 W	50 W
Hair dryer	1,500 – 2,000 W	1,750 W
EV charger, Level 2	7,200 W	7,200 W
Dishwasher	1,200 – 2,400 W	1,800 W
Electric tank water heater	3,000 – 5,500 W	4,500 W

Running watts from EnergySage, except dishwasher and water heater (editorial estimates). Light bulb range covers incandescent to LED; the calculator uses the LED end.

Show the math

Power draw = 125 W (typical television)
125 W × 5 h × 100% duty × 1 unit(s) ÷ 1000 = 0.625 kWh per day of use
× 7 days/wk × 52.14 wk = 228.1 kWh per year (19 per month)
228.1 kWh × $0.182 = $41.52 per year

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