⚡ Energy Cost Calculator
Enter an appliance's wattage, its daily run time, and your electricity rate to see the energy it uses and what it costs each day, month, and year — for the dishwasher or anything else in the kitchen.
🧮 Watts to Dollars
What is an Energy Cost Calculator?
It converts an appliance's power rating and run time into the unit utilities actually bill you for — the kilowatt-hour — and prices that against your tariff. A 1800-watt machine running an hour a day uses 1.8 kWh, and multiplying by your rate turns that into a real daily, monthly, and yearly figure.
Use it to compare appliances, decide whether a longer eco cycle beats a hotter fast one, or work out what a new energy-efficient model would save. Enter the rate from a recent bill, since electricity prices vary by supplier and by time of use.
❓ Frequently Asked Questions
How does the energy cost calculator work?
Enter the appliance's power draw in watts, how many hours a day it runs, and your electricity rate per kilowatt-hour. It converts watts and hours into kilowatt-hours per day (watts times hours divided by 1000), then multiplies by your rate to give the daily cost, the monthly cost over 30 days, and the annual cost over 365 days.
How many watts does a dishwasher use?
Most dishwashers draw between 1200 and 2400 watts while running, with the heating element for hot water and drying accounting for the bulk of it. A typical full cycle runs the equivalent of roughly one to one and a half hours at full power, so entering the wattage and an average daily run time gives a realistic estimate.
Why does heating water dominate the energy cost?
Heating is energy-intensive: raising a tank of water to washing temperature takes far more power than pumping or spinning it. That's why the heated-dry option, hotter cycles, and cold incoming water in winter all push the cost up, and why eco cycles that wash cooler for longer usually come out cheapest.
How can I lower my appliance's energy cost?
Run full loads on the eco or economy setting, skip heated drying and let dishes air-dry, and use off-peak tariff hours if your supplier offers them. Over a year those small changes add up, and this calculator lets you see the annual difference before you commit to a new habit or a more efficient model.