Toaster Wattage for Generator Sizing
About the Toaster
A standard two-slice or four-slice toaster uses resistive heating coils to brown bread. As a purely resistive load with no motor, there is no starting surge. Toasters draw their full wattage continuously while in use but are only operated for a few minutes at a time. Four-slice toasters or toaster ovens may draw up to 1500 watts. Include this appliance in your generator sizing if breakfast preparation during outages is important to your household.
Generator Sizing for a Toaster
Running a toaster by itself requires a generator with at least 1,063 W of capacity (2 kW), which includes a 25% safety margin. However, you rarely run a single appliance on a generator. When combined with other appliances, the toaster contributes 850 W to the continuous running load.
The toaster is a resistive load, meaning it uses a heating element or simple electronic circuit rather than a motor. Resistive loads draw the same wattage from the moment they turn on until they turn off, with no starting surge. This makes them the easiest type of appliance to run on a generator. When calculating your total generator load, the toaster adds a flat 850 W to your running total with no impact on peak surge calculations. Resistive loads also produce a power factor of 1.0, meaning they use electricity very efficiently with no wasted reactive power.
To determine the total generator size you need, use our interactive calculator to combine the toaster with your other appliances. The calculator automatically handles the starting surge calculation and applies the 25% safety margin to give you an accurate recommendation. Alternatively, browse the scenarios below to see common generator setups that include the toaster.
Tips for Running a Toaster on a Generator
Running a toaster on a generator is straightforward since it is a purely resistive load. There are no special starting procedures or surge considerations. Simply ensure your generator's continuous (rated) wattage exceeds 850 W plus the wattage of all other appliances running simultaneously.
Since the toaster draws a constant 850 W whenever it is operating, you can accurately predict generator fuel consumption. At typical generator fuel efficiencies, running the toaster continuously adds approximately 0.1 gallons of gasoline per hour to your fuel consumption. If the toaster operates intermittently (like a thermostat-controlled heater), the actual fuel impact will be lower.
For sensitive electronic components within the toaster, an inverter generator provides the cleanest power output. However, most resistive appliances work fine on conventional generators as well. If you are running the toaster along with sensitive electronics like computers, the inverter generator protects all connected devices.
Toaster Wattage Compared to Similar Appliances
The following table compares the toaster to other appliances in the kitchen category. Understanding relative power requirements helps you make informed decisions about which appliances to prioritize on your generator and where you might find opportunities to reduce your total load.
| Appliance | Running Watts | Starting Watts |
|---|---|---|
| Toaster (this appliance) | 850 W | — |
| Refrigerator | 150 W | 600 W |
| Microwave Oven | 1,000 W | 1,500 W |
| Coffee Maker | 800 W | — |
| Dishwasher | 1,500 W | 1,800 W |
| Electric Oven / Range | 2,500 W | — |
| Garbage Disposal | 500 W | 1,200 W |
Frequently Asked Questions
How many watts does a toaster use?
A toaster uses approximately 850 watts of continuous (running) power during normal operation. As a resistive load with no motor, it has no starting surge above its running wattage.
What size generator do I need to run a toaster?
To run a toaster by itself, you need a generator rated for at least 1,063 W (2 kW), which includes a 25% safety margin above the running wattage of 850W. However, most people run additional appliances alongside the toaster, so your actual generator needs will be higher. Use our calculator to add your other appliances and get a comprehensive recommendation.
Can I run a toaster on an inverter generator?
Yes, a toaster runs perfectly well on an inverter generator. As a resistive load with no motor starting surge, it is one of the easiest appliances to power with any generator type. The clean sine wave output of an inverter generator is a bonus for any electronic components.