【How-to】How much electricity does a dishwasher use

Multiply 1,800 by 2 to get 3,600, or 3.6 kilowatt-hours. Multiply this figure by 13.9 cents, resulting in 50.04 cents. So, it costs you just over 50 cents a day to run your dishwasher. According to the PennState College of Earth and Mineral Sciences, average dishwasher wattage could be between 1,200 and 2,400 watts.