Laundry Cost Calculator

Laundry looks like a small chore until you multiply it by every week of the year. A few loads can turn into hundreds of machine cycles, gallons of water, kilowatt-hours of energy, detergent portions, laundromat payments, and appliance wear. This calculator turns those repeated choices into annual cost, monthly average, cost per load, and loads per year so you can budget with fewer surprises.

The tool has two modes. Choose home laundry when you own or use a washer and dryer and want to include utilities, detergent, and machine cost. Choose laundromat when you pay a single price per load for washing and drying. That distinction matters because home laundry has several small cost components, while laundromat laundry is mostly a direct per-load charge.

Home laundry inputs

For home laundry, enter loads per week, washer type, water cost per gallon, electricity cost per kilowatt-hour, detergent cost per load, and machine purchase price. Washer type controls the water gallons assigned to each load: high-efficiency uses 20 gallons, standard uses 35 gallons, and top-loading uses 45 gallons. The calculator uses 3.5 kilowatt-hours per load for electricity regardless of washer type. Detergent cost is entered directly per load, so include detergent, softener, scent beads, stain products, or shared supplies only if you want them represented.

Machine purchase price is optional but important. If you enter 0, the calculator ignores machine depreciation. If you enter a washer and dryer purchase price, it spreads that amount over eight years and over your expected weekly load count. This is not a resale-value depreciation schedule; it is a practical way to assign appliance cost to each load.

Laundromat inputs

For laundromat laundry, you can enter loads per week and cost per load at the laundromat. Enter the combined washer and dryer cost for one finished load. If your laundromat charges separately for large washers, dryers by time, card fees, detergent, or parking, add those costs into the per-load price before entering it.

Exact formulas

For laundromat mode:

$\text{annual cost} = \text{laundromat price per load} \times \text{loads per week} \times 52$

For home mode, water cost per load is:

$\text{water cost per load} = \text{washer gallons} \times \text{water cost per gallon}$

Electricity cost per load is:

$\text{electricity cost per load} = 3.5 \times \text{electricity cost per kilowatt-hour}$

Machine depreciation per load is:

$\text{machine depreciation per load} = \frac{\text{machine price}}{52 \times 8 \times \text{loads per week}}$

Then the home cost per load is:

$\text{cost per load} = \text{water cost per load} + \text{electricity cost per load} + \text{detergent cost per load} + \text{machine depreciation per load}$

Annual and monthly costs are:

$\text{annual cost} = \text{cost per load} \times \text{loads per week} \times 52$

$\text{monthly average} = \frac{\text{annual cost}}{12}$

Example

Suppose a household does 4 loads per week at home with a standard washer. Water costs 0.015 dollars per gallon, electricity costs 0.12 dollars per kilowatt-hour, detergent costs 0.35 dollars per load, and the washer and dryer together cost 800 dollars.

The standard washer uses 35 gallons per load:

$\text{water cost per load} = 35 \times 0.015 = 0.525$

Electricity is fixed at 3.5 kilowatt-hours:

$\text{electricity cost per load} = 3.5 \times 0.12 = 0.42$

Machine depreciation per load is:

$\text{machine depreciation per load} = \frac{800}{52 \times 8 \times 4} = 0.480769$

Add detergent:

$\text{cost per load} = 0.525 + 0.42 + 0.35 + 0.480769 = 1.775769$

The annual cost is 1.775769 times 4 loads per week times 52 weeks, or 369.36 dollars after rounding to cents. The monthly average is 30.78 dollars, and the calculator reports 208 loads per year.

For laundromat mode, if the combined wash and dry price is 5 dollars per load and you do the same 4 loads per week, annual cost is 5 × 4 × 52, or 1,040 dollars. That comparison shows why the correct per-load laundromat price matters.

Typical ranges to consider

Weekly load count is often the biggest driver. A single person might do 2 or 3 loads per week; a family with towels, bedding, uniforms, and sports clothes may do 8 or more. Washer water use varies by machine design and cycle. The calculator’s high-efficiency, standard, and top-loading values are planning assumptions, not a replacement for your model’s label or manual.

Electricity varies by dryer use, water temperature, cycle length, and local rates. Heavy towels and bulky bedding can require longer drying than mixed clothing. Line-drying, spin speed, and cleaning the lint filter can reduce energy use. Detergent also varies widely: pods are convenient but may cost more per load, while concentrated liquid can be economical only if measured carefully. Use the laundry detergent calculator to check dosage and the price per unit calculator to compare package sizes.

How to use the result

Use annual cost for budgeting, monthly average for cash flow, and cost per load for behavior changes. If your cost per load is high, first check whether the machine price, weekly load count, or laundromat charge is driving it. If utility cost dominates, compare with the electricity cost calculator. If machine depreciation dominates, running fuller loads may lower cost per finished load, as long as clothes still wash and dry properly.

For a household budget, enter the monthly average in the budget calculator. For scheduling, pair the cost result with the laundry time calculator. A laundromat may cost more in dollars but save time if multiple large machines run at once; home laundry may cost less but spread across an entire day.

Common mistakes

• Entering the washer price but forgetting the dryer price when both are part of the setup.
• Using the water bill’s total amount instead of converting it to a per-gallon rate.
• Treating the calculator’s 3.5 kilowatt-hours as a custom dryer measurement; it is a fixed assumption in the code.
• Comparing home cost without machine depreciation to laundromat cost with all fees included.
• Ignoring small recurring items such as stain remover, dryer sheets, card fees, or extra drying minutes.
• Running many partial loads, which increases annual loads and can raise both utility and detergent spending.

Sources

• ENERGY STAR, Clothes washers — efficiency context for washer water and energy performance.
• ENERGY STAR, Clothes dryers — dryer energy efficiency considerations for laundry planning.
• ENERGY STAR, Save at home — household energy-saving guidance relevant to appliance use.
• EPA WaterSense, Statistics and facts — background on household water use and conservation.