Water heating drives much of the cost
Dishwashers use electricity for pumps, controls, and drying, but water heating can be the biggest part of the energy use. High-temperature wash and sanitize modes may increase the cost of a cycle.
Kitchen Appliances
Dishwasher Electricity Cost Calculator
A 1,800 watt dishwasher costs about $0.46 for a 1.5 hour cycle at $0.17 per kWh.
Estimated energy use 0.00 kWh/day
Per day $0.00
Per month $0.00
Per year $0.00
Quick estimate
$0.46 per day
This uses 1800 watts, 1.5 hours per day, and an electricity rate of $0.17 per kWh.
Dishwasher electricity use depends heavily on water heating and heated drying settings.
Typical dishwasher wattage
Many dishwasher units fall around 1800 watts, with a rough range of 1200 to 2400 watts. Check the product label, user manual, or manufacturer specifications for the most accurate number.
| Estimate | Watts | Hours per day | Daily cost | Monthly cost |
|---|---|---|---|---|
| Low estimate | 1200W | 0.75 | $0.15 | $4.59 |
| Typical use | 1800W | 1.50 | $0.46 | $13.77 |
| High estimate | 2400W | 2.25 | $0.92 | $27.54 |
How the estimate works
Convert watts to kilowatts, multiply by the number of hours used, then multiply by your electricity rate.
Cost = Watts / 1000 x Hours Used x Electricity RateFor this dishwasher example: 1800 / 1000 x 1.5 x 0.17 = $0.46 per day.
Dishwasher cost factors
These details make this estimate more useful for real-world use.
Heated dry can change the estimate
A heated drying phase can add noticeable energy use after the wash is finished. If your dishwasher has air dry or energy saver dry, using that setting can lower electricity use without changing the wash cycle itself.
How to lower the cost
Run full loads and use air dry or energy saver modes when available.
The easiest way to improve the estimate is to replace the default values with your actual wattage, average runtime, and local electricity rate.
About these numbers
Wattage ranges are practical planning estimates for common household appliances. Actual use can differ by model, age, settings, room conditions, and maintenance.
Dishwasher electricity cost FAQ
How much does it cost to run a dishwasher?
A 1,800 watt dishwasher costs about $0.46 for a 1.5 hour cycle at $0.17 per kWh.
What wattage should I use?
Use the wattage printed on the appliance label when possible. As a starting estimate, this page uses 1800 watts and shows a common range of 1200 to 2400 watts.
Why is my actual bill different?
Electricity bills include many appliances, fees, taxes, seasonal changes, and utility rate structures. This calculator estimates appliance energy cost only.
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