How Much Electricity Does a Toaster Oven Use?

The answer, first

A full-size toaster oven at 1,800 watts costs about 33.9¢ an hour to run at full draw. A smaller 1,150-watt model costs about 21.7¢ an hour. Over a year, at 30 minutes a day, 365 days a year, that is roughly $62 and $40 respectively. That is the entire answer; everything below is how we got there and how to make it your number instead of ours.

The arithmetic

There is no trick to it, which is what makes it strange that the appliance sites stop at the wattage. Power in watts, divided by 1,000, gives kilowatts. Times hours gives kilowatt-hours. Times your rate gives dollars.

Why this is an upper bound

Every figure here is computed at the full rated wattage, and that makes it a ceiling, not a meter reading. A real oven does not draw its rating continuously: once the cavity reaches temperature, the thermostat cycles the elements off and on to hold it, so a long bake spends a good fraction of its time drawing almost nothing. We compute at full draw because no manufacturer publishes a duty cycle, and a correction factor we invented would be exactly the sort of unsourceable number this site exists to avoid. A verifiable ceiling beats a friendly-looking guess.

Your rate matters more than the oven

18.83¢ per kWh is the US average residential rate for April 2026, published by the EIA. Real rates run from roughly half that to more than double depending on your state and tariff. Your electricity rate changes the answer far more than which oven you buy, so take any per-hour figure on the site, divide by 18.83, and multiply by your own cents-per-kWh. Every number here is built so that substitution works.