How do I know if a 13-gallon trash can is too big for my kitchen?

A 13-gallon can is too big if you find yourself emptying it less than once a week, or if it takes up floor space you need for other purposes. If the can is usually less than a third full when you take it out, you could likely manage with an 8- or 10-gallon model and empty it just as often.

Does a larger trash can always mean less frequent emptying?

Not necessarily. If you generate a lot of wet food waste or live in a warm climate, odors and pests may force you to empty the can just as often as a smaller one. A larger can only reduces trip frequency if the waste you produce is relatively dry and odor-free, such as paper packaging and non-organic trash.

What is the best trash can size for a family of four?

A family of four that cooks regularly and does not compost typically needs a 13- to 16-gallon (50–60 liter) can, emptied two to three times per week. If you compost food scraps and recycle separately, you might manage with a 10-gallon (38-liter) can. If you produce a lot of bulky packaging, consider a wider can even if the liter capacity is the same.

Can a small trash can work if I take out the trash daily?

Yes. A 5-gallon (20-liter) can emptied daily can serve a one- or two-person household that cooks frequently and wants to control odors. The trade-off is more frequent trips to the outdoor bin, but you gain counter or floor space and avoid the buildup of smells and fruit flies that comes with a larger can.

What Determines Kitchen Trash Can Size: Household Size, Cooking Habits, and Waste Mix

Why Household Size Sets the Floor for Trash Can Capacity

The number of people eating and living in a home is the single strongest predictor of how much kitchen waste it produces. A single adult preparing most meals at home generates roughly 2 to 3 gallons (8 to 11 liters) of kitchen trash per week, while a family of four might produce 8 to 12 gallons (30 to 45 liters) in the same period. These figures are general averages, not precise measurements, but they give a starting point for sizing.

A common rule of thumb is to choose a can that holds at least one day's worth of waste for your household. If you prefer taking trash out every other day, double that daily volume. For example, a two-person household that discards 1.5 gallons per day would need a 3-gallon can for daily emptying or a 6-gallon can for every-other-day service. This keeps the can from overflowing between trips to the outdoor bin.

1 person: 5–8 liters (1.5–2 gallons) per day of kitchen waste
2 people: 8–12 liters (2–3 gallons) per day
3–4 people: 12–20 liters (3–5 gallons) per day
5+ people: 20–30 liters (5–8 gallons) per day

Cooking Frequency Changes the Volume of Discarded Food Scraps

Households that cook from scratch several times a week produce more vegetable peels, eggshells, bones, and packaging waste than those who rely on prepared meals or dining out. A family that eats a home-cooked dinner six nights a week might fill a 13-gallon (50-liter) can in three or four days, while a household that cooks twice a week could make that same can last a week or more.

Consider not just how often you cook, but what you cook. Whole vegetables generate more trimmings than pre-chopped produce. Meat with bones and fat leaves more inedible scraps. Batch cooking and meal prep add a burst of waste on prep days, which can overwhelm a small can even if your weekly average looks modest. If your cooking pattern is uneven, choose a can sized for your heaviest prep day, not your weekly average.

The type of cooking also matters for odors. Frying and cooking with strong spices or seafood creates smells that make a smaller, more frequently emptied can more pleasant than a large can that sits for days. In that case, the right size might be smaller than the volume math suggests, because you will want to empty it daily.

Cooking 1–3 times per week: add 2–4 liters (0.5–1 gallon) to baseline
Cooking 4–6 times per week: add 4–8 liters (1–2 gallons)
Cooking daily with whole ingredients: add 8–12 liters (2–3 gallons)
Batch cooking or meal prep: add 20% to the can size to handle prep-day spikes

Waste Type: Compostables, Recyclables, and Non-Recyclables

What you throw away matters as much as how much. A household that composts food scraps diverts a large share of wet, heavy waste away from the kitchen bin, so a smaller can may suffice. Conversely, a home that sends everything to the landfill will fill a can faster because food scraps are heavy and take up more volume per meal than dry packaging.

Recycling habits also affect the kitchen can. If you rinse and collect recyclables in a separate bin under the sink or in the garage, the kitchen trash can only needs to hold true garbage. If recyclables go in the same kitchen can and you sort them later, that can will fill faster and may need to be 20 to 30 percent larger.

Another factor is bulky packaging. Households that buy in bulk or order delivery frequently accumulate large plastic clamshells, cardboard boxes, and foam trays that flatten but still take up space. A can with a wider opening or a step-open lid can accommodate these awkward items better than a tall, narrow can of the same liter capacity.

Composting food scraps: can reduce kitchen trash volume by 30–50%
Recycling in a separate bin: allows a smaller kitchen can
Recycling in the same can: add 20–30% capacity
Bulky packaging: choose a wide-mouth can over a tall, narrow one

Waste type	Effect on trash can size	Example
Food scraps only	Smaller can OK if composted or disposed of daily	Vegetable peels, coffee grounds
Mixed garbage	Larger can or more frequent emptying	Leftovers, packaging, hygiene products
Recyclables in same can	Add 20–30% capacity	Plastic bottles, cans, paper
Bulky items	Wider opening preferred	Delivery clamshells, pizza boxes

Lifestyle Patterns: Guests, Deliveries, and Odor Control

Households that entertain frequently or order takeout several times a week produce waste in bursts. A dinner party for eight can double or triple a day's trash, and delivery containers from a single meal can fill a 5-gallon (20-liter) can. If you host regularly, consider a can that is larger than your daily needs, or keep a collapsible backup bin in a pantry for peak days.

Odor control is a practical constraint that can push you toward a smaller can even when volume suggests otherwise. Warm weather, leftover seafood, and meat bones create smells that become unpleasant within a day. A 13-gallon (50-liter) can with a tight lid and a carbon filter might hold a week of waste for a couple, but the same can in a hot climate might need emptying every two days to stay fresh. In that case, a 7- to 10-gallon (26–38 liter) can that you empty more often is more pleasant.

The location of the can also matters. A can under the sink is limited by cabinet height, typically fitting models up to 10 gallons (38 liters). A freestanding can in a corner or pantry can be larger. If you have limited floor space, a slim 8-gallon (30-liter) can may be the practical maximum even if your household generates more waste, meaning you will take out the trash more frequently.

Entertaining or hosting: add 20–40% capacity or keep a backup bin
Frequent takeout or delivery: expect volume spikes from containers
Warm climate or strong-smelling waste: choose a smaller can emptied daily
Under-sink location: limit to 8–10 gallons (30–38 liters)

Practical Checklist: Matching Can Size to Your Kitchen Reality

Use this checklist to narrow down the right capacity for your kitchen. It combines the factors above into a step-by-step decision, rather than giving a single number, because every household differs. Start with the household size, adjust for cooking and waste type, then confirm the can fits your space and emptying routine.

Step 1: Count the people who regularly eat in your home. Step 2: Estimate how many times per week you cook and whether you use whole ingredients. Step 3: Note whether you compost, recycle separately, or send everything to landfill. Step 4: Consider your hosting and takeout frequency. Step 5: Measure the space where the can will live, and check the height of any cabinet if it will go underneath.

Household size: 1–2 people → 5–10 gallons (20–38 L); 3–4 people → 10–16 gallons (38–60 L); 5+ people → 16+ gallons (60+ L)
Cooking frequency: daily cooking with whole foods → add 20–30% to baseline; cooking rarely → subtract 20–30%
Waste type: composting → subtract 30%; recycling in same can → add 20–30%; bulky packaging → choose wide-mouth
Odor and climate: warm climate or strong-smelling waste → choose a smaller can you can empty daily
Space: measure height, width, and depth; under-sink max is typically 10 gallons (38 L)
Emptying routine: if you prefer daily trips, choose a smaller can; if you want to empty every 3–4 days, choose a larger one