Energy Cost Calculator

Calculate electricity cost for any appliance based on wattage, hours of use, and your utility rate.

Power consumption in watts. Check the device label. Examples: LED bulb 10W, refrigerator 150W, space heater 1500W, hair dryer 1800W.
W
Average hours the appliance runs each day. A fridge compressor runs about 8-10 hours per day despite being plugged in 24/7.
hrs/day
Your cost per kilowatt-hour from your utility bill. US average is about $0.16/kWh but varies widely ($0.10-$0.45/kWh). Check your bill for exact rate.
$/kWh
How many identical appliances you are running. For example, 10 light bulbs of the same wattage or 3 identical space heaters.
units

Results

Daily Energy Use-kWh
Daily Cost-
Monthly Cost (30 days)-
Annual Cost (365 days)-
Annual Energy Use-kWh
References:
Energy (kWh) = Power (W) x Time (hrs) / 1000. Cost = Energy x Rate. US average electricity rate is ~$0.16/kWh (2024 EIA data). This calculation does not include demand charges or time-of-use rate variations.