A household's usable capacity is estimated from its actual loads and available time. Counting people is not enough: how much gets washed, what is sorted separately, and how many loads can be handled all change the result.
Log the laundry before converting it to kilos
- During a representative week, separate the loads you would actually wash together by fabric and care requirements.
- Weigh each group dry, subtracting the container, with a suitable scale and without lifting weights that feel uncomfortable.
- Note bulky items: they can limit movement even when their mass is low.
- Record when you need each group finished and how many loads you can do.
- Compare that data with program limits, capacity, and installation space.
Why the weekly total does not determine a load
Illustrative example: 18 kg per week can be distributed across six 3 kg groups or three 6 kg groups. Whether they can be combined depends on their care requirements, not the total. Buying enough capacity for the entire weekly volume does not eliminate the need to separate incompatible fabrics.
A lightweight comforter may require drum space and a program that cannot be inferred from its weight. Nominal kilograms are a reference condition, not a permit for any item of the same weight.
Include drying if it is part of the routine
With a washer-dryer, note the drying limit and whether you will need to remove some items or split the load. If several loads depend on the same drum, drying time determines when the next wash can start.
The result of the method is a range of frequent and occasional loads, along with space and scheduling constraints. Not a universal kilos-per-person table.
Prioritize having your regular loads fit real programs and times; treat bulky items as a separate check.