Laundry Cost Calculator
Estimate per-load and annual laundry cost from supplied use and prices.
Open toolLaundry Load Calculator
Enter your household size, weekly laundry weight per person, washer drum capacity, water per cycle, and per-load supply and utility costs below to estimate weekly and annual wash loads.
Free to useNo sign-upRuns in your browser
Enter your details
Enter the inputs, then select Calculate loads.
Your result
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Result will appear here
How Laundry Load Calculator works
The Laundry Load Calculator multiplies household members by weekly fabric weight, divides by usable washer capacity, rounds up to whole wash cycles, and totals water, washer runtime, and annual operating cost.
Weekly Loads = ceil((People × Weekly_lb) ÷ Capacity_lb); Annual Loads = Weekly Loads × 52; Annual Water = Annual Loads × Gallons_per_load.
Per-load cost adds detergent/supply cost and water/energy cost together, then multiplies by both weekly cycles and 52 weeks per year.
Laundry Load Calculator Quick Reference & Input Guide
Review the input parameters, allowed value ranges, and worked reference cases for the Laundry Load Calculator below before running your calculation.
| Parameter / Scenario | Default / Sample Value | Rule or Allowed Range | Output / Usage Note |
|---|---|---|---|
| Input: Household members | 4 | Range: 1 to 50 | Required workspace parameter |
| Input: Laundry per person per week | 12 | Range: 1 to 100 | Required workspace parameter |
| Input: Usable washer load capacity | 15 | Range: 2 to 60 | Required workspace parameter |
| Input: Detergent & supplies cost per load | 0.28 | Range: 0 to 20 | Required workspace parameter |
| Worked Case 1: Baseline run (4 people, 12 lb/week, 15 lb HE washer) | Preloaded / test values | Weekly Laundry (lb) = People × lb/person/week; Rounded Weekly Loads = ceil(Weekly Laundry ÷ Washer Capacity); Annual Cost = Weekly Loads × 52 × (Detergent Cost + Energy/Water Cost) | Four people generate 48 lb of laundry per week, which equals 3.2 exact loads or 4 rounded loads per week (208 loads/year). At $0.93/load and 19 gal/cycle, laundry uses 76 gal/week (3,952 gal/year) and costs $193.44/year. |
| Worked Case 2: Compact apartment washer (2 people, 12 lb/week, 9 lb drum) | Preloaded / test values | Weekly Laundry (lb) = People × lb/person/week; Rounded Weekly Loads = ceil(Weekly Laundry ÷ Washer Capacity); Annual Cost = Weekly Loads × 52 × (Detergent Cost + Energy/Water Cost) | Two people produce 24 lb/week, requiring 3 loads/week (156 loads/year) in a 9 lb compact drum. At 13 gal/load and $0.80/load, annual water use is 2,028 gallons and annual cost is $124.80. |
How to use Laundry Load Calculator step by step
Enter your household count, washer size, and per-load utility rates to benchmark your laundry routine.
Enter household size and weekly laundry weight
Enter the number of household members and average pounds of dry laundry per person per week (12 lb is a practical baseline including towels and sheets).
Set washer drum capacity and cycle water use
Input your washer's usable dry weight capacity in pounds and gallons consumed per wash cycle.
Add per-load costs and calculate annual totals
Enter detergent cost and combined energy/water cost per cycle, then click Calculate loads to view weekly and annual totals.
Worked examples for Laundry Load Calculator
Compare a four-person family using a standard HE washer against a two-person apartment using a compact machine.
Baseline run (4 people, 12 lb/week, 15 lb HE washer)
Four people generate 48 lb of laundry per week, which equals 3.2 exact loads or 4 rounded loads per week (208 loads/year). At $0.93/load and 19 gal/cycle, laundry uses 76 gal/week (3,952 gal/year) and costs $193.44/year.
Compact apartment washer (2 people, 12 lb/week, 9 lb drum)
Two people produce 24 lb/week, requiring 3 loads/week (156 loads/year) in a 9 lb compact drum. At 13 gal/load and $0.80/load, annual water use is 2,028 gallons and annual cost is $124.80.
Account for color and fabric sorting
If you wash delicates, gym gear, or whites in separate half-full loads, reduce the usable washer capacity input to your average actual load weight (for example, 10 lb instead of 15 lb) for a realistic cycle count.
How to interpret the Laundry Load Calculator output
Review the gap between exact weight-based loads and rounded weekly cycles alongside annual water and cost figures.
When exact loads are just above a whole number (such as 3.15 loads), consolidating full loads or waiting an extra day before washing bedding can eliminate 52 wash cycles per year. The annual cost and water breakdown also shows how quickly switching to cold-water wash cycles or bulk detergent lowers yearly utility spend.
Input limits, assumptions, and related tools
Check drum capacity ratings and dryer assumptions before comparing appliance upgrades.
Washer manufacturers advertise drum volume in cubic feet rather than pounds. As a rule of thumb, multiply cubic feet by 3.5 to find comfortable dry-fabric pounds for everyday mixed loads. Annual projections assume 52 uniform weeks per year.
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Open toolLaundry Load Calculator: common questions
Answers about using Laundry Load Calculator and understanding its results.
How many pounds of laundry does one person produce per week?
An average adult generates 10 to 14 pounds of dry laundry per week, including everyday clothing, bath towels, and weekly bed sheet changes. Athletes and young children often add 3 to 5 pounds per week.
How many pounds fit in a standard home washing machine?
A compact washer holds 8 to 10 lb of dry laundry, a standard 4.0 to 4.5 cu ft high-efficiency washer holds 14 to 16 lb comfortably, and a large-capacity 5.0+ cu ft drum holds 18 to 20 lb without overloading.
Why does the calculator show both exact and rounded weekly loads?
Exact loads divide total weekly fabric weight by drum capacity, while rounded weekly loads use ceiling rounding because any leftover laundry requires an additional wash cycle.
Can I export these laundry water and cost estimates?
Yes. All calculations run locally in your browser. Click Copy result or Download result.txt to save the weekly and annual load, water, and cost summary.
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