Electricity Cost Calculator: Appliance Running Cost by kWh
Use this free electricity cost calculator to see what any appliance costs to run per hour, day, month and year. Enter the watts, the hours and your price per kWh to calculate your electricity bill, or switch to kWh mode to use your meter reading. It works for air fryers, ovens, refrigerators, air conditioners, heaters, TVs, PCs and EV charging. KitchenHint does the math for you.
Free Appliance Electricity Cost Calculator
Pick an appliance or enter your own numbers, then press the calculate button.
Estimated electricity cost
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Electricity Cost Formula: How to Calculate kWh and Your Bill
To calculate electricity cost from watts, convert to kilowatt-hours first, then multiply by your rate. The same electricity bill formula works for every appliance.
Cost = (Watts × Hours ÷ 1,000) × Price per kWh
1. Convert watts to kWh
Multiply watts by hours and divide by 1,000. A 1,500 W air fryer running 0.5 hours uses 0.75 kWh.
2. Multiply by your rate
Multiply the kWh by your price per kWh. At $0.18, 0.75 kWh costs about $0.14.
3. Scale to month and year
Multiply the daily cost by 30.4 for the monthly cost, or by 365 for the annual electricity cost.
EV charging cost works the same way: kWh added to the battery × price per kWh.
Kitchen Appliance Electricity Cost per Month
How much does it cost to run an air fryer, oven, microwave or refrigerator? These estimates use typical wattage and a $0.18 per kWh rate, close to the 2026 US average.
| Appliance | Typical wattage | Daily use | Energy per month | Cost per month |
|---|---|---|---|---|
| Air fryer | 1,500 W | 30 min | 22.8 kWh | $4.11 |
| Electric oven | 2,500 W | 1 hour | 76.0 kWh | $13.69 |
| Microwave | 1,000 W | 15 min | 7.6 kWh | $1.37 |
| Dishwasher | 1,800 W | 1 hour (1 cycle) | 54.8 kWh | $9.86 |
| Refrigerator | 150 W | 8 h compressor run time | 36.5 kWh | $6.57 |
| Coffee maker | 1,200 W | 15 min | 9.1 kWh | $1.64 |
| Electric kettle | 1,500 W | 20 min | 15.2 kWh | $2.74 |
| Rice cooker | 700 W | 30 min | 10.6 kWh | $1.92 |
| Induction cooktop | 1,800 W | 1 hour | 54.8 kWh | $9.86 |
Home Appliance Running Cost: AC, Heater, TV, PC and EV Charging
Cooling, heating and EV charging usually cost the most to run because they draw high power for many hours.
| Appliance | Typical wattage | Daily use | Energy per month | Cost per month |
|---|---|---|---|---|
| Air conditioner | 1,500 W | 8 hours | 365.0 kWh | $65.70 |
| Electric space heater | 1,500 W | 6 hours | 273.8 kWh | $49.27 |
| Washing machine | 500 W | 1 hour | 15.2 kWh | $2.74 |
| Electric dryer | 3,000 W | 1 hour | 91.2 kWh | $16.43 |
| TV | 100 W | 4 hours | 12.2 kWh | $2.19 |
| Gaming PC | 450 W | 4 hours | 54.8 kWh | $9.86 |
| Ceiling fan | 75 W | 8 hours | 18.2 kWh | $3.28 |
| LED bulb | 10 W | 5 hours | 1.5 kWh | $0.27 |
| EV charger (Level 2) | 7,200 W | 3 hours | 657.0 kWh | $118.26 |
Wattage varies by model, so check the label on your appliance. Estimates exclude fixed charges and taxes. Monthly figures use 30.4 days.
How to Lower Your Electricity Bill
1. Use the air fryer for small meals
A 1,500 W air fryer running 20 minutes uses about 0.5 kWh. A 2,500 W oven running an hour uses 2.5 kWh.
2. Keep fridge coils clean
Dust on the coils makes the compressor work harder. Vacuum them a couple of times a year.
3. Match pot size to burner
A small pan on a large burner wastes heat around the sides. Match the burner to your cookware.
Electricity Cost Calculator FAQ
How do I calculate electricity cost?
Multiply the appliance's watts by the hours used, divide by 1,000 to get kWh, then multiply by your price per kWh. A 1,000 W appliance used for 2 hours at $0.18 per kWh costs $0.36.
How do I convert watts to kWh?
Divide watts by 1,000 to get kilowatts, then multiply by the hours of use. A 1,500 W air fryer running for 30 minutes uses 0.75 kWh.
How much does it cost to run an air fryer?
A 1,500 W air fryer used 30 minutes a day uses about 0.75 kWh a day and costs about $4.11 a month at $0.18 per kWh.
How much does it cost to run an air conditioner?
A 1,500 W air conditioner running 8 hours a day uses 12 kWh and costs about $2.16 a day, or about $65.70 a month. Real cost varies with the unit and the weather.
How much does it cost to run a refrigerator?
A refrigerator averaging 150 W with about 8 hours of compressor run time a day uses 1.2 kWh a day and costs about $6.57 a month. The compressor cycles on and off, so 8 hours is an average.
How do I find my electricity rate per kWh?
Look for the price per kWh or per unit on your electricity bill or tariff. The US residential average is about 18 cents per kWh in 2026 according to the EIA, but it varies widely by state.
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