What Size Washer Do You Need?

Scan the row that matches your household, then read across for the weight of a typical load, the bedding it handles and the width it takes up on the floor.

The labels small, medium and large are not standardized, so two machines with the same label can sit a full cubic foot apart. The cubic-foot number is the only figure worth comparing. Treat the towel counts as rough guides too, since a thick bath sheet takes up far more room than a thin one.

Capacity is the volume of the drum, measured by filling it with water to its top edge and converting that to cubic feet, reported to a tenth. It is a geometric measurement of empty space, not a statement of how much clothing fits inside and still gets clean.

Load a washer about half to three-quarters full, loose, so the clothes can tumble and the detergent can reach them. A drum packed to its stated capacity will not wash well, and on some machines it will not spin properly either. In practice, plan on using roughly 60 to 75 percent of the sticker number.

The second number on compact machines

Some compact and imported washers carry a capacity measured under a different standard, and that figure runs noticeably higher than the US one for the same drum, often by 15 to 25 percent. A machine sold as 2.8 cu ft in one system may be 2.4 cu ft in the other. When you compare a compact against a full-size, compare like with like, and treat the US-measured figure as the one that matches what you will actually experience.

Four answers settle the size faster than any chart, and they take about ten minutes to gather.

1. How many loads a week do you run? The average US household runs about 300 loads a year, roughly 5 to 6 a week. More than 7 a week points to the large band.
2. What is your bulkiest regular item? A king comforter, a duvet, a mattress pad or a pet bed sets a floor on capacity that household size alone will not reveal.
3. What does your current washer hold? Look up its model number and its capacity, then decide whether you want the same, more or less. This is the most reliable starting point you have.
4. What space do you have? Width, depth, height and clearance decide what will physically fit, whatever the other answers say.

When the four answers disagree, the bulkiest item and the space win, because those are hard limits. Household size is the one factor you can stretch with an extra cycle.

Household size gives you a starting band, and each size carries its own caveat.

One person

2.5 to 3.4 cu ft is plenty. A compact or portable machine can work if space is tight, as long as you accept smaller loads and no bedding.

Two people

3.0 to 4.0 cu ft covers the week comfortably. Step up if you wash bedding at home rather than at a laundromat.

Three people

4.0 to 4.5 cu ft is the sweet spot, with room for towels and a set of sheets in the same cycle.

Four people

4.0 to 4.5 cu ft still works, moving to 4.5 and up with sports kit, cloth diapers or frequent bedding washes.

Five people

4.5 cu ft and up. At this size the drum starts paying for itself in fewer cycles per week.

Six or more

5.0 cu ft and up, and expect to run several loads a week regardless of what you buy.

A washer lasts roughly 8 to 14 years, so size for the household you expect to have, not only the one you have today. A machine bought for two people often has to serve four a few years later.

Bulky items set a hard floor on capacity, because a comforter that does not fit cannot be washed in two smaller pieces.

• King-size comforter: 4.5 cu ft or more, in a drum without a fixed center agitator.
• Queen comforter: about 4.0 to 4.5 cu ft.
• Duvet cover and shams, mattress pad, sleeping bag: 4.0 cu ft and up.
• Pet bed: depends on the size of the bed; a large one behaves like a comforter.

If a bulky item only needs washing a few times a year, a trip to the laundromat is cheaper than upsizing the washer for it, unless the household is large, in which case the bigger drum pays for itself in fewer loads every week.

The sticker number and the usable room are not the same thing. Top-loaders reach the highest capacities on the market, but a fixed center agitator takes up drum space, so less of the drum holds clothes. Front-loaders and impeller top-loaders use the whole drum.

At the same cubic-foot rating, a front-loader generally holds more laundry. The trade-off is time: front-load cycles typically run longer than top-load cycles, so a bigger usable drum comes with a longer wait per load.

When the room sets the size, these are the realistic ceilings.

Compact front-load

About 2.1 to 2.8 cu ft in a 24-inch-wide body, stackable, suited to one or two people and small loads. It is not a full-size substitute: a family will run more cycles, and bulky items are out.

Portable and mini washers

Roughly 0.8 to 2.5 cu ft, light-duty, suited to one person's everyday laundry rather than bedding or family loads. Many hook to a faucet and drain into a sink.

All-in-one washer-dryers

The washer drum may be full-size, but the drying side handles roughly half of it. You effectively wash half loads, and drying takes a long time.

The machine has to fit the opening, the route to it and the room to open its door.

• Width: about 27 in for a full-size washer, about 24 in for a compact, up to about 30 in for some extra-large models.
• Clearance: about 6 in behind for hoses and the drain, about 1 in between washer and dryer, and enough room in front for the door to open and for you to load.
• Height: a top-loader needs clearance above for the lid to open; a stacked pair needs the combined height plus a little.
• Route: measure doorways, hallways and stair turns. A machine that fits the alcove but not the doorway is no good.
• Floor: it should be level and solid, and a portable washer should not sit on carpet.

Yes. You pay more for capacity you do not use. A half-empty drum can trigger balance and spin problems on some machines. A deeper machine may stick out past the dryer or block a walkway. And a very deep top-loader can be hard to reach into for shorter users, who end up stretching to pull the last sock off the bottom.

There is also a bottleneck to watch: a bigger washer paired with a small dryer just moves the wait to the dryer. If you upsize one, check the other.

Dryers are sized larger than washers because clothes need room to tumble. A common rule is a dryer roughly twice the washer's capacity, or one band up. Small dryers run about 2 to 4 cu ft, medium about 4 to 7, and large 7 and up.

A king comforter that needs a 4.5 cu ft washer or more wants a dryer of about 7 cu ft or more. Pair a large washer with a small dryer and the laundry simply queues up at the second machine.