Appliance Planning
Average Appliance Wattage
Appliance wattage is the starting point for estimating electricity cost, but the best number is always the one printed on your own device.
Common wattage ranges
The table below uses practical planning ranges from the WattCostGuide calculators. Use it to compare appliances, then open a calculator for a more specific estimate.
| Appliance | Typical watts | Common range | Calculator |
|---|---|---|---|
| Space Heater | 1500W | 750W-1500W | Open |
| Air Conditioner | 1200W | 500W-3500W | Open |
| Fan | 60W | 20W-100W | Open |
| Refrigerator | 180W | 100W-800W | Open |
| Dehumidifier | 500W | 250W-750W | Open |
| Clothes Dryer | 3000W | 1800W-5000W | Open |
| Air Fryer | 1500W | 800W-1800W | Open |
| Gaming PC | 500W | 250W-850W | Open |
| Electric Oven | 3000W | 2000W-5000W | Open |
| Microwave | 1100W | 700W-1600W | Open |
| Dishwasher | 1800W | 1200W-2400W | Open |
| Washing Machine | 800W | 400W-1400W | Open |
| Electric Kettle | 1500W | 1000W-1800W | Open |
| Coffee Maker | 1000W | 600W-1500W | Open |
| Toaster Oven | 1400W | 1000W-1800W | Open |
| Instant Pot | 1000W | 700W-1200W | Open |
Why wattage is only part of the story
A high-wattage appliance used for a few minutes can cost less than a low-wattage appliance running all day. For cost, combine watts with hours used and your electricity rate.
How to choose the right wattage number
The best wattage number is the one printed on your own appliance. Look for a label on the back, bottom, door frame, power adapter, or product manual. Some devices list watts directly, while others list volts and amps. If you see amps and volts, multiply them to estimate watts.
Watts = Volts x AmpsFor example, a device rated at 120 volts and 10 amps can draw up to about 1,200 watts. That rating may represent a maximum rather than constant use, but it is still a useful starting point when no better measurement is available.
High-wattage vs long-runtime appliances
| Appliance type | Why wattage matters | What to check next |
|---|---|---|
| Heating appliances | Space heaters, dryers, ovens, and water heaters can draw high power. | Estimate runtime carefully because cost rises quickly. |
| Cooling appliances | AC units and heat pumps may run for many hours in hot or cold weather. | Check compressor runtime, thermostat setting, and outdoor temperature. |
| Always-on appliances | Refrigerators and freezers use energy every day, but cycle on and off. | Use active compressor hours or annual kWh if available. |
| Electronics | Computers and TVs vary by workload, brightness, and accessories. | Include monitors, consoles, speakers, and idle time when relevant. |
When annual kWh is better than watts
Some appliances, especially refrigerators, freezers, dishwashers, and clothes washers, may list annual kWh on an EnergyGuide label. If you have that number, it can be more useful than a single wattage value because it already accounts for typical cycling or test-cycle behavior.
To estimate yearly cost from annual kWh, multiply the annual kWh by your electricity rate. To estimate monthly cost, divide the yearly result by 12.
Average appliance wattage FAQ
Is typical wattage the same as actual wattage?
No. Typical wattage is a planning estimate. Actual wattage can change by model, setting, workload, temperature, age, and whether the appliance cycles on and off.
Why does a power adapter show more watts than the device uses?
Adapter ratings often show the maximum output the adapter can provide. A laptop or small device may draw less during light use and more while charging or doing demanding work.
Compare wattage in calculators
Use these calculators to see how different wattage ranges affect daily and monthly cost.
Related planning guides
Use these guides to turn wattage into kWh, cost, and savings decisions.