For a standard household, a 12 to 16 gallon trash can is the best balance of capacity and footprint. If you cook frequently or have a family of four or more, go with a 20 to 25 gallon can. The right size prevents overflow without wasting floor space or requiring daily emptying.

Quick Answer

Kitchen trash can sizes range from 8 gallons (small households) to 50+ gallons (commercial). Most homes need 12–16 gallons. Choose based on household size, cooking frequency, and available space.

  • Household Size: 1–2 people: 8–12 gallons; 3–4 people: 12–16 gallons; 5+ people: 20–25 gallons.
  • Cooking Habits: Frequent home cooks generate more waste—add 4–6 gallons beyond the baseline.
  • Space Constraints: Measure your cabinet or corner: standard 13-gallon fits under most sinks; 20+ gallon requires floor space.
  • Liner Size: 13-gallon bags fit most 12–16 gallon cans; 20-gallon cans need 20–30 gallon bags.

Household Size Drives Capacity

The number of people in your home is the primary factor. A single person or couple typically produces 8–12 gallons of kitchen waste per week, so an 8–12 gallon can works—emptied every 3–4 days. For a family of three to four, 12–16 gallons is ideal; this holds about 2–3 days of trash with typical cooking. Homes with five or more people should consider 20–25 gallons to avoid daily hauling.

If you entertain often or have kids, bump up by 4 gallons. A 20-gallon can in a family of four may only need emptying twice a week, reducing trips to the outdoor bin.

Cooking Habits and Waste Volume

How much you cook at home directly affects trash volume. If you prepare most meals from scratch, you’ll have more food scraps, packaging, and compostable waste. Heavy home cooks often fill a 13-gallon can in two days. In that case, a 16–20 gallon can is better.

Conversely, if you eat out often or rely on convenience foods, you may produce less organic waste and more lightweight packaging. A 12-gallon can could suffice. Also consider recycling: if you don’t have a separate bin for recyclables, you’ll need a larger trash can to handle mixed waste.

Available Space and Placement

Measure your intended spot before buying. Standard under-sink cabinets typically accommodate cans up to 12–13 gallons (roughly 15 inches wide and 18 inches tall). A 20-gallon can is about 18 inches wide and 24 inches tall, requiring dedicated floor space in a pantry, corner, or against a wall.

Pull-out cabinet cans are space-efficient but limited to 10–13 gallons. For larger capacity, a freestanding stainless steel step can is popular—it fits neatly beside counters. If you have a narrow galley kitchen, a slim 8–10 gallon can (around 9 inches wide) might be your only option.

Trash Can Types and Their Typical Sizes

  • Step cans: Most common in 8, 10, 12, 13, 16, and 20 gallons. 13 gallons is the standard size for kitchen step cans because 13-gallon trash bags are widely available.
  • Touchless (sensor) cans: Typically 12–16 gallons. The sensor mechanism adds cost but not capacity.
  • Pull-out cabinet cans: Usually 10–13 gallons, designed to mount inside a base cabinet. They save floor space but limit size.
  • Open-top / swing lid cans: Available in 8–50 gallons. Larger sizes (20+) are often used for heavy cooking or as a combined trash/recycling bin.
  • Commercial / tall cans: 25–50 gallons, rare in home kitchens unless you run a catering operation from home.

Liner Compatibility and Odor Control

Always check standard bag sizes: 8–10 gallon cans use 8–10 gallon bags; 12–16 gallon cans use 13-gallon bags; 20–25 gallon cans use 20–30 gallon bags. Using the wrong size leads to sagging or tearing. Many step cans have a liner lock ring to keep bags hidden.

For odor control, larger cans mean less frequent emptying, but waste sits longer. If you compost or have a disposal, a smaller can emptied daily may smell less. For larger cans, look for models with charcoal filters or a tight seal lid. Stainless steel resists odors better than plastic.

Pro Tips

  • Buy a 13-gallon can if you want the widest selection of bags and accessories—it’s the industry standard.
  • If your kitchen has a narrow gap (under 10 inches wide), choose a slim 8-gallon step can; they still hold a day’s trash for two people.
  • For households that compost, a smaller trash can (8–10 gallons) paired with a compost bin reduces landfill waste and odor.
  • Measure the height under your counter if placing a can there—some step cans need 3–4 inches of clearance for the lid to open fully.

Common Mistakes to Avoid

  • Buying a can that’s too large for your space, forcing it into a corner where you can’t open the lid easily.
  • Ignoring bag size: a 20-gallon can that requires 20-gallon bags may cost more in liners over time than a 13-gallon can using common 13-gallon bags.
  • Choosing a can without a lid or with a flimsy lid—this invites pests and odors, especially in warm climates.
  • Forgetting to measure the door swing: a tall step can placed next to a cabinet door can block it from opening fully.

FAQ

Is a 13-gallon trash can big enough for a family of four?

For a family of four that cooks regularly, a 13-gallon can may need emptying every other day. It’s workable but can overflow on heavy cooking days. A 16-gallon can gives a bit more buffer and still uses 13-gallon bags (they stretch).

What is the most common kitchen trash can size?

13 gallons is the most common size for kitchen trash cans. It fits under most sinks, accepts standard 13-gallon bags, and works for 2–4 person households. Many step can models default to this capacity.

Should I get a 20-gallon trash can for my kitchen?

A 20-gallon can is ideal for large families (5+), heavy home cooks, or those who want to empty trash only once a week. However, it requires significant floor space—at least 18 inches wide and 24 inches tall—and uses larger, more expensive bags.

The Bottom Line

Choosing the right kitchen trash can size comes down to your household size, cooking habits, and available space. For most people, a 13–16 gallon can is the sweet spot. Measure your space, think about how often you want to take out the trash, and pick a size that fits your routine without overwhelming your kitchen.

Related Guides