Kitchen Appliances
A refrigerator averaging 180 watts for 8 active hours costs about $0.26 per day at $0.18 per kWh.
Quick estimate
This uses 180 watts, 8 hours per day, and an electricity rate of $0.18 per kWh.
Refrigerators cycle on and off, so the active compressor hours are usually lower than 24 hours per day.
Many refrigerator units fall around 180 watts, with a rough range of 100 to 800 watts. Check the product label, user manual, or manufacturer specifications for the most accurate number.
| Estimate | Watts | Hours per day | Daily cost | Monthly cost |
|---|---|---|---|---|
| Low estimate | 100W | 4 | $0.07 | $2.16 |
| Typical use | 180W | 8 | $0.26 | $7.78 |
| High estimate | 800W | 12 | $1.73 | $51.84 |
A refrigerator stays connected all day but its compressor cycles. Defrost heaters, door openings, warm food, room temperature, and an ice maker can create short periods of higher consumption.
Wattage input
Nameplate watts describe a running or maximum electrical load, not a 24-hour average. For bill planning, an EnergyGuide annual kWh figure or a multi-day meter reading is more representative than multiplying nameplate watts by 24.
Runtime input
If using watts in this calculator, enter estimated compressor-equivalent hours rather than 24 hours. Better still, measure at least two normal days so cooling and defrost cycles are included.
Convert watts to kilowatts, multiply by the number of hours used, then multiply by your electricity rate.
Cost = Watts / 1000 x Hours Used x Electricity RateFor this refrigerator example: 180 / 1000 x 8 x 0.18 = $0.26 per day.
These details make this estimate more useful for real-world use.
A refrigerator is plugged in all day, but the compressor cycles instead of running constantly. For that reason, estimating active compressor hours is usually more useful than entering 24 hours at the nameplate wattage.
Older units, warm rooms, blocked airflow, damaged door seals, frequent door openings, and very cold settings can all increase runtime. A second garage refrigerator may also cost more in summer because the surrounding air is warmer.
These answers reflect the cost, wattage, and kWh questions people are already searching for.
A refrigerator may be plugged in all day, but its compressor cycles on and off. The daily cost estimate is most useful when watts are paired with active compressor-equivalent hours, not simply 24 hours at rated watts.
If your refrigerator has an EnergyGuide label, annual kWh divided by 365 often gives a better daily estimate than nameplate watts. Use this calculator when you want to compare scenarios or convert measured watts and hours into daily cost.
At the default 180W and 8 active compressor-equivalent hours per day, the estimate is about $7.78 for a 30-day month at $0.18 per kWh. A refrigerator rated at 500 kWh per year would average about $7.50 per month at the same rate.
For an EnergyGuide estimate, multiply annual kWh by your electricity rate to get yearly cost, then divide by 12 for a monthly average. This method captures compressor cycling more realistically than treating the rated wattage as a continuous 24-hour load.
Keep door openings short, leave airflow space behind the fridge, and check worn door gaskets.
The easiest way to improve the estimate is to replace the default values with your actual wattage, average runtime, and local electricity rate.
Wattage ranges are practical planning estimates for common household appliances. Actual use can differ by model, age, settings, room conditions, and maintenance.
These authoritative sources support the calculation method, default electricity-rate benchmark, and appliance-specific operating context. The wattage range remains a planning estimate; use the nameplate on your own appliance for the most accurate input.
Used to benchmark the rounded default residential electricity rate. Your utility bill remains the best source for your own rate.
Supports the watts-to-kWh calculation method and the recommendation to check the appliance nameplate or use a power meter.
Provides efficiency and annual energy-use context for full-size and compact refrigerators.
Using the default 180W and 8 active hours, the estimate is about $0.26 per day at $0.18 per kWh. Actual cost depends on annual kWh, room temperature, door openings, age, and settings.
Usually no. Refrigerators are connected for 24 hours, but the compressor does not run at full power the whole time. Use measured kWh or active compressor-equivalent hours for a better estimate.
Using 180W for 8 active hours per day, a refrigerator costs about $7.78 per 30-day month at $0.18 per kWh. For a better estimate, multiply the EnergyGuide annual kWh by your rate and divide by 12.
The appliance is connected for 24 hours, but the compressor is not normally at full power all day. Entering rated watts for 24 hours can substantially overstate energy use unless that wattage is already an average draw.
A refrigerator averaging 180 watts for 8 active hours costs about $0.26 per day at $0.18 per kWh.
Use the wattage printed on the appliance label when possible. As a starting estimate, this page uses 180 watts and shows a common range of 100 to 800 watts.
Electricity bills include many appliances, fees, taxes, seasonal changes, and utility rate structures. This calculator estimates appliance energy cost only.
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