Appliance Wattage Calculator

Primary output $5.84 per year

Enter the power from the appliance label, daily run time, and your electric rate. Switch to amps and voltage if the label does not list watts.

Choose wattage if the label lists watts. Switch to amps and voltage if the label lists A and V instead.
Continuous running watts from the nameplate, manual, EnergyGuide label, or plug-in watt meter.
Current from the appliance nameplate; used only in amps-and-voltage mode.
Most U.S. outlets are 120 V; many dryers and ranges use 240 V.
Average hours per day the appliance is actively used. For refrigerators, use 24 hours with a duty-cycle factor.
Enter your all-in utility rate as dollars per kWh, such as 0.16 for 16 cents/kWh.
Advanced options
Use Custom for any appliance, or click the refrigerator/freezer preset above to set cycling defaults you can edit.
Use 1 for steady loads. For cycling appliances, enter the fraction of time the compressor or element actually draws running power.
Watts used while plugged in but idle, such as clocks, displays, remote receivers, or power supplies.
Use 365 for year-round appliances and fewer days for seasonal devices.
Answer $5.84 per year
Computed watts 100 W
Daily energy use 0.100 kWh/day
Annual energy use 36.5 kWh/yr
Daily cost $0.02
Monthly cost $0.49
Annual cost $5.84
Show calculation details
Effective active wattage 100 W
Active-use annual cost $5.84
Standby annual cost $0.00