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Dishwasher Cost Calculator

Use this dishwasher cost calculator to estimate per-cycle and monthly dishwasher cost from energy, water, sewer, and detergent assumptions.

Last reviewed June 6, 2026Source note includedFree tool

Live calculator

Dishwasher cost

Cost per cycle$0.56

Electricity, water, sewer, and detergent per dishwasher cycle.

Monthly dishwasher cost$17.15

Weekly cost multiplied by the average weeks per month.

Annual dishwasher cost$205.30

Weekly cost multiplied by 52.

Cost per cycle
PartEstimate
Electricity$0.22
Water and sewer$0.05
Detergent$0.30
Total per cycle$0.56

Utility estimates depend on local rates, fixed fees, taxes, runtime, billing period, and household usage. Compare against the actual bill before settling up.

Quick answer

Dishwasher Cost Calculator: what it calculates

Dishwasher Cost Calculator calculates dishwasher cost from cycles per week, kWh per cycle, gallons per cycle, utility rates, and detergent cost. The visible formula is Cost per cycle = kWh per cycle x electric rate + gallons / 1,000 x water rate + detergent cost.

ResultDishwasher cost
InputsCycles per week, kWh per cycle, Gallons per cycle, Utility rates, Detergent cost
FormulaDishwasher cost formula

Formula

Dishwasher cost formula

Cost per cycle = kWh per cycle x electric rate + gallons / 1,000 x water rate + detergent cost

Cycle type, heated dry, water temperature, and appliance efficiency can change the actual cost.

How to use

Steps

  1. Enter dishwasher cycles per week.
  2. Enter kWh and gallons used per cycle.
  3. Enter electric and water plus sewer rates.
  4. Add detergent cost to see per-cycle, monthly, and annual cost.

Example

Sample calculation

Cycles/week7
Energy1.2 kWh/cycle
Water4 gal/cycle
Estimated costAbout $0.56/cycle

Calculator use

Best for

  • Use this dishwasher cost calculator to estimate per-cycle and monthly dishwasher cost from energy, water, sewer, and detergent assumptions.
  • Estimating home utility cost, shared bills, appliance usage, or service charges before splitting or budgeting.
  • Testing usage changes such as shorter showers, different appliance cycles, rate changes, or roommate shares.
  • Keeping rate, meter, usage, and fixed-fee assumptions visible before comparing against a real bill.

Before relying on it

Check first

  • Leaving out fixed service fees, tiered rates, taxes, delivery charges, minimum bills, seasonal rates, or billing-period length.
  • Using appliance labels, averages, or old bills without checking actual runtime, local rates, and household usage.
  • Splitting a bill without agreeing whether fixed fees, shared rooms, guests, or unequal usage should be weighted.

Details

What to know before using the result

Heated dryCan raise energy use

Drying settings may use extra electricity compared with air-dry or shorter cycles.

Water inputGallons per cycle

Use your dishwasher manual, EnergyGuide label, or a conservative estimate when you do not know the exact value.

DetergentPer-cycle cost

Pods, tablets, powder, and rinse aids can make detergent cost a meaningful part of the estimate.

Source notes

References used for this calculator

U.S. Energy Information AdministrationExplains how watts, hours of use, and kilowatt-hours relate when estimating electricity consumption.EPA WaterSenseExplains household water use context for estimating water-related utility costs.

Benchmarks

How to read the result

Under $0.40/cycle: Lower estimate.

More likely with efficient cycles, low utility rates, and low detergent cost.

$0.40 - $0.90/cycle: Planning range.

A practical range for checking monthly household appliance cost.

$1+/cycle: Review inputs.

Can happen with high electricity rates, heated dry, or expensive detergent.

Calculator accuracy

Methodology and assumptions

Formula

Cost per cycle = kWh per cycle x electric rate + gallons / 1,000 x water rate + detergent cost

Inputs used

Cycles per week, kWh per cycle, Gallons per cycle, Utility rates, Detergent cost

Limitations

Utility pages use visible usage and rate assumptions. Actual bills may include tiers, service fees, delivery charges, taxes, minimums, seasonal rates, and provider-specific rules.

Last reviewed

June 6, 2026

Cite this page

Toolkit Shelf. Dishwasher Cost Calculator. Last reviewed June 6, 2026. https://toolkitshelf.com/tools/dishwasher-cost-calculator

FAQ

Common questions

How do I calculate dishwasher cost?

Multiply kWh per cycle by your electric rate, add water and sewer cost from gallons used, then add detergent cost.

Does heated dry affect cost?

Yes. Heated dry can increase electricity use, so use a higher kWh per cycle if you rely on it.

Is this the same as hand-washing cost?

No. This estimates dishwasher cycles only. Hand-washing cost depends on faucet flow, hot water, and washing time.