🚰 Dishwasher Cost Calculator
Enter your cycles per week and your water and electricity rates to see what the dishwasher costs to run — and how much water it saves versus washing the same loads by hand.
🚰 Cycles & Rates
What is a Dishwasher Cost Calculator?
It turns your dishwasher habits and utility rates into a running cost. From the water and electricity per cycle, how often you run it, and your per-gallon and per-kWh rates, it computes the weekly and annual cost — and compares the machine's yearly water use to hand-washing the same loads at the sink.
Use it to decide between the dishwasher and the sink, to budget the true cost of running the machine, or to see how full loads and eco cycles pay off. The figures are estimates for planning — enter your own rates and cycle counts for the closest match.
❓ Frequently Asked Questions
How does the calculator price a dishwasher cycle?
It multiplies the water used per cycle by your water rate per gallon, adds the electricity used per cycle times your rate per kWh, and multiplies by how many cycles you run each week. Multiplying the weekly figure by 52 gives the annual running cost. Defaults are 4 gallons and 1.2 kWh per cycle, typical of a modern Energy Star machine.
Does a dishwasher really use less water than washing by hand?
For a full load, almost always. A modern dishwasher uses around 4 gallons per cycle, while washing the same quantity of dishes by hand with the tap running uses roughly 27 gallons. The calculator shows both yearly totals side by side so you can see the water you save by running full loads in the machine.
What water and electricity rates should I enter?
Use the rates from your own utility bills. Water is often billed per 1,000 gallons or per hundred cubic feet, so convert to a per-gallon figure — a common range is about $0.004 to $0.02 per gallon all-in. Residential electricity averages around $0.12 to $0.20 per kWh in much of the US. Your actual rates give the most accurate result.
How can I lower what my dishwasher costs to run?
Run full loads rather than half-empty ones, skip the heated-dry option and let dishes air-dry, use an eco or normal cycle instead of heavy or sanitize when you can, and scrape rather than pre-rinse under a running tap. On a time-of-use electricity plan, running the machine at off-peak hours further trims the electricity portion of the cost.