How Many Gallons of Trash Can Do You Need? A Guide to Kitchen, Office, and Garage Wastebaskets

Quick Answer

For most households, a 13-gallon trash can suits the kitchen, a 4- to 7-gallon wastebasket works for offices and bedrooms, and a 20- to 32-gallon can handles garage or workshop waste. Match the capacity to how often you want to empty it and the space you have.

Choosing the right trash can size isn't just about fitting a bag. It affects how often you take out the trash, how much floor space you lose, and whether odors linger between empties. A too-small can in the kitchen means daily trips to the bin; a too-large one in a home office invites forgotten trash and clutter.

This guide breaks down typical wastebasket capacities by room, explains the trade-offs of bigger versus smaller cans, and gives you simple decision rules so you can buy once and stop guessing.

Kitchen Trash Can Gallon Size: Balancing Capacity and Footprint

The kitchen is the highest-traffic trash zone in most homes. A standard 13-gallon can matches common kitchen bags and handles daily food waste, packaging, and leftovers for a typical family. If you cook often or have a large household, you might prefer a 20-gallon can to reduce emptying frequency, but it will take up more floor space and may not fit under a standard countertop.

Consider the shape and footprint as much as the gallon size. A slim, tall can fits narrow gaps between cabinets, while a wider can offers easier access but demands more floor area. If you're short on space, a smaller can with more frequent emptying beats a bulky bin that blocks traffic.

• Measure the space under your counter or beside your cabinet before choosing a can.
• Check bag sizes: 13-gallon cans typically fit standard kitchen bags; larger cans need bigger bags.

Office Wastebasket Capacity: Matching Volume to Daily Discards

Offices and home workspaces generate mostly paper, snack wrappers, and small packaging. A 4- to 7-gallon wastebasket is usually enough for a personal desk area, emptied once or twice a week. If you share a workspace or handle bulky packaging, step up to a 10-gallon can, but remember it takes up more room under a desk.

Smaller cans encourage more frequent emptying, which keeps odors and pests away. They also fit neatly under desks or in corners without disrupting your workflow. The trade-off: you'll make more trips to the main dumpster or outdoor bin.

• A compact wastebasket with a handle makes it easy to carry to a larger bin.
• Consider a can with a lid if your office attracts flies or you dispose of food wrappers.

Garage Trash Can Size: Planning for Projects and Recycling

Garages collect a mix of packaging, old parts, yard waste, and workshop scraps, so capacity matters more than aesthetics. A 20- to 32-gallon can gives you room for bulky items and reduces trips to the curb. If your garage doubles as a workshop, a can with wheels makes it easy to move heavy loads.

Think about how you'll use the space. A large can takes up valuable floor area, so measure your garage layout first. If you already have a sturdy shelf or cart, you can keep a medium can off the floor and reserve ground space for vehicles or equipment.

• Wheeled cans are easier to move when full, especially over uneven garage floors.
• If you store recyclables separately, add a second can or use stackable bins to save space.

Decision Rules for Choosing Trash Can Size

• Rule 1: Match capacity to emptying frequency: Estimate how much trash you produce in a day, then multiply by how many days you want between empties. For a kitchen, 13 gallons handles about 2-3 days for a family of four; a 20-gallon can extends that to 4-5 days. Choose a size that fits your routine, not just your space.
• Rule 2: Measure your space before you buy: Check the width, depth, and height of the spot where the can will live. A can that looks small in a store can overwhelm a tight corner or block a doorway. Always measure twice, buy once.
• Rule 3: Consider the trade-off between size and convenience: Larger cans mean fewer trips but take up more room and can be heavy when full. Smaller cans are easier to lift and fit in tight spaces but require more frequent emptying. Pick the smallest size that you can comfortably empty on your preferred schedule.

Storage Solutions That Complement Your Trash Can

• 3-Tier Steel Cart with Handle: Assembled Dimensions: 16.7" W x 13.9" D x 34.9" H; 3 stationary solid steel bins with breathable mesh bottoms; 2" diameter swivel wheels (2 locking); total weight capacity 19.8 lb. (6.6 lb. per bin). Use this rolling cart beside your trash can to hold recycling bins, cleaning supplies, or extra bags, keeping everything within reach without taking up more floor space.
• UltraHD® Locker Cabinet: Assembled Dimensions: 24" W x 18" D x 66" H; powder-coated solid steel construction; stainless steel locking door with magnetic latch; pegboard side panels for hooks and baskets. Store trash bags, gloves, and cleaning products behind a lockable door in the garage, and use the pegboard panels to hang small tools or extra liners near your wastebasket.
• 5-Tier Steel Shelving: Assembled Dimensions: 30" W x 14" D x 61.5" H; 5 steel wire shelves, height adjustable at 1" increments; 300 lb. per shelf weight capacity on leveling feet; includes 4 casters (2 locking). Place a garage trash can on a lower shelf to keep it off the floor, and use upper shelves for recycling bins or bulky waste bags, maximizing vertical space.

Which Trash Can Size Fits Your Needs?

Best for

• Kitchens with daily cooking and a family of 3-4: a 13-gallon can balances capacity and footprint.
• Home offices or bedrooms with light waste: a 4- to 7-gallon wastebasket keeps clutter down.
• Garages or workshops with bulky project waste: a 20- to 32-gallon can with wheels reduces trips.

Not for

• Tiny galley kitchens where floor space is precious: a 20-gallon can may block traffic; stick to 13 gallons or less.
• Shared offices with high paper volume: a 7-gallon can empties too often; step up to 10 gallons.
• Garages used mainly for parking: a 32-gallon can eats floor space; use a medium can on a shelf instead.

Choosing the right trash can size comes down to your space, your waste volume, and how often you want to empty it. Start with the 13-gallon kitchen standard, scale down for offices, and go bigger for garage projects. Pair your can with smart storage like a rolling cart or shelving to keep the area tidy and functional.