To calculate laundry cost per load at home, add the washer’s electricity, water and sewer charges, detergent, and drying cost. If you use a laundromat or shared laundry room, start with the posted wash and dry prices instead. Multiply the result by the number of loads you actually do to build a monthly budget.
Quick example: A hypothetical home load costs $0.06 in washer electricity, $0.20 in water and sewer, $0.20 in detergent and $0.45 in electric drying. That is $0.91 per wash-and-dry load, or $18.20 for 20 loads. This example assumes cold-water washing and excludes appliance purchase, repairs and fixed utility fees.
Every dollar amount and machine-use figure below is an invented worksheet input, not a national average, retailer quote or measurement of your appliances. Replace the inputs with your bills, product instructions and model information. The purpose is to show the arithmetic and avoid counting the same charge twice.
1. Decide which cost you are measuring
There are two useful questions: “What does one extra load cost?” and “What is the full cost of owning laundry equipment?” The first concerns variable costs such as detergent and energy. The second also includes equipment, installation, maintenance and eventual replacement. Keep them separate so a small running-cost estimate does not look like the total ownership cost.
For an existing home machine, begin with variable cost per load. For a move to an apartment with paid machines, use the posted prices. If water or electricity is included in rent, your immediate out-of-pocket cost may differ from the resource cost. Record who pays each charge before adding it to your worksheet.
Do not assign an entire monthly electricity or water bill to laundry. Those bills cover other household uses, and some charges remain even if you run fewer loads. Our electricity bill guide explains how to separate usage from other bill components.
2. Calculate washer electricity and water charges
Washer electricity cost = kilowatt-hours per cycle × your applicable price per kilowatt-hour. If your assumed cycle uses 0.4 kWh and the applicable rate is $0.15/kWh, the calculation is 0.4 × $0.15 = $0.06. Neither number is presented as typical. A different machine, cycle or tariff can change the result.
Use model-specific information or suitable measured cycle data where available. Rated maximum power is not necessarily average consumption across a whole wash cycle. An annual energy label also uses assumptions that may differ from your household. ENERGY STAR’s clothes washer guidance explains the use of the yellow EnergyGuide label when comparing models. Check what a quoted energy figure includes before adding separate water-heating or drying costs.
Water and sewer cost = gallons per cycle ÷ billing-unit gallons × the applicable combined usage rate. Suppose a cycle uses an invented 20 gallons and the water-plus-sewer usage rate is an invented $10 per 1,000 gallons. The cost is 20 ÷ 1,000 × $10 = $0.20. If water and sewer have separate rates, calculate them separately and add the results.
Read the units on your own bill. Do not divide by 1,000 if your utility uses a different billing unit. Tiered rates, sewer caps and minimum bills may require a different calculation. Use the rate that applies to the additional usage you are estimating, and keep fixed service fees on a separate line.
3. Add detergent and drying without double counting
Divide the detergent purchase cost by the number of loads you expect to obtain at the label-directed dose. An invented $12 container used for 60 loads costs $0.20 per load. If your loads require a different dose under the instructions, change the load count. A large bottle is not automatically cheaper per correctly dosed load.
For an electric dryer, multiply cycle kWh by the applicable electricity rate. An invented 3 kWh cycle at $0.15/kWh costs $0.45. A gas dryer needs a separate fuel calculation, plus its electricity use if relevant. Do not apply an electric-dryer example unchanged to a gas appliance.
This worksheet’s base example uses cold-water washing, so it has no separate household hot-water-heating allowance. For warm or hot washes, add the relevant heating cost unless it is already included in your energy input. The water volume charge and the cost to heat that water are different items.
| Hypothetical input | Calculation | Cost per load |
|---|---|---|
| Washer electricity | 0.4 kWh × $0.15/kWh | $0.06 |
| Water and sewer usage | 20 gallons ÷ 1,000 × $10 | $0.20 |
| Detergent | $12 ÷ 60 loads | $0.20 |
| Electric drying | 3 kWh × $0.15/kWh | $0.45 |
| Total variable cost | Sum of the four lines | $0.91 |
The example excludes softener, stain treatment, dryer sheets, extra rinses and repeat drying. Add the products and cycles you actually use rather than assuming they are free. Keep rounding until the end when possible; small differences can matter across many loads.
4. Turn loads per week into a monthly allowance
Counting actual loads for a month is the simplest starting point. If you only know your weekly routine, multiply weekly loads by 52 and divide by 12 for an annualized monthly average. Four loads each week becomes about 17.33 loads per month, not 16. At the hypothetical $0.91 per load, that averages about $15.77 monthly.
The average is a planning number, not a prediction for every calendar month. Bedding, visitors and larger seasonal items may add loads. Record those separately if they are occasional expenses. A month with five laundry days can cost more than a four-day month when you wash on a fixed weekly schedule.
| Loads in the month | At the hypothetical $0.91 per load |
|---|---|
| 12 | $10.92 |
| 20 | $18.20 |
| 28 | $25.48 |
Choose one place for each expense in your budget. If detergent is already included in your household supplies allowance, do not add it again as a new cash expense under laundry. You can still show it in a per-load analysis; just reconcile that analysis with the categories in your monthly plan.
5. Compare paid laundry on the same basis
For shared machines or a laundromat, add the wash price, expected drying charge, detergent and any unavoidable payment or travel cost. If drying is priced by time, use the time you normally need rather than the smallest displayed increment. Separate one-off card setup charges from recurring costs.
For example, an invented $3 wash, $2 dry and $0.20 detergent dose totals $5.20 per load before travel or payment charges. Twenty such loads total $104. These are deliberately hypothetical prices; use your location’s posted charges. Do not add home electricity and water costs on top of a machine price that already covers them.
Compare similar amounts of laundry. A large commercial drum may hold more than a small home washer. A per-cycle comparison can be misleading if it takes two home cycles to handle the same laundry. Record both the practical load size and total trip cost. Time and convenience can matter, but put a dollar value on your time only if you choose to do so consistently.
6. Test small changes before buying equipment
EPA’s WaterSense home maintenance guidance recommends full loads where practical, appropriate detergent quantities and cold water where suitable. Follow clothing-care labels and appliance instructions, including capacity limits. A full load does not mean an overloaded drum.
Change one input in the worksheet to see its effect. If you skip electric drying for eight suitable loads in the invented example, eight × $0.45 = $3.60 in modeled dryer electricity avoided. That is not a guaranteed bill reduction: your real cycle use, tariff and drying needs may differ. Air-drying also needs suitable space and conditions.
A new machine requires a separate purchase decision. If an appliance costs $600 more after installation and saves a genuinely estimated $5 per month, simple payback is 120 months, or 10 years. That illustrative calculation ignores financing, repairs, changing rates and resale value. It does not establish that replacing a working machine is worthwhile.
Your reusable laundry worksheet
Write down: wash loads this month; washer energy per cycle; applicable electricity rate; water volume per cycle; water and sewer usage rates; detergent cost per correctly dosed load; drying cost; and any other supplies or paid-machine charges. Mark unknowns rather than hiding them inside a precise-looking total.
Then calculate cost per load and multiply by the actual monthly count. Keep fixed fees, equipment costs and repair reserves separate. Review the result after a month of use, and connect it to your monthly budget worksheet. The most useful result is one you can update when rates or routines change.
Frequently asked questions
Does the washer’s label tell me the exact cost of my load? No. It is useful for comparison, but the stated estimate depends on assumptions. Your cycle, usage, energy price and water-heating setup may differ. Read what the model information includes.
Should I include the fixed water service charge? Keep it separate when estimating the cost of an extra load. You can allocate fixed costs for a broader household analysis, but washing one fewer load may not remove that charge.
How do I budget when utilities are included in rent? Record your direct payments and any paid laundry charges. Do not invent a separate utility payment you do not make. If comparing housing options, consider the full rent-and-laundry package.
Is cold water always appropriate? Follow the fabric-care label, detergent guidance and the appliance instructions. This is a cost worksheet, not a rule overriding cleaning or health requirements.
How many loads should I assume each month? Use your actual count if possible. Otherwise, weekly loads × 52 ÷ 12 provides an annualized monthly average. Add unusual bedding or bulky-item loads separately.
Method: Original arithmetic examples with hypothetical prices and usage. No local utility tariff or laundromat price is claimed. Official background sources checked October 27, 2026.
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