How Many Watts of Electricity does a Dishwasher use?

Real power-use measurements from a dishwasher.

How Much Power does a Dishwasher use

Dishwasher: 967 Watts


  • A dishwasher pumps water into an insulated box. After it is full of water (probably about 4 gallons), it pumps that water around for about 45 minutes. It has electronics and a heater. I don't think dishwashers use a motor. They usually just pump the water around at high pressure, which makes the arms inside spin. I guess that's technically a motor.
  • Has a cycle of operation, including the initial water fill (12 watts), washing (200 watts), and heating and washing (900 watts).

Power Use

  • Watts: 967
  • Kilowatts: 0.967 Kw.

Operation Cost

  • cost per minute: 19 hundredths of one cent (0.19 ¢)
  • cost per hour: 11.6¢
  • cost per day: 93¢
  • cost per month: $17.65

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Power use of these items was actually tested. Individual items will vary, but these are the actual measurements.