When I first started talking to commercial kitchen managers and restaurant owners a few years back, one question came up more than any other: “What size trash can do I actually need?” It didn’t matter if they were opening a 20-seat café, a 150-seat bistro, or a high-volume catering hub—everyone was guessing, and most were either buying cans too small to hold a night’s worth of waste or too big to take up valuable prep space in a kitchen that’s already crammed with grills, mixers, and storage bins. As a trash can supplier, I’ll be the first to say there’s no one-size-fits-all answer, but there is a science to sizing large kitchen trash cans that works for every operation. Let’s break it down. Trash Can
First, you have to understand what a commercial kitchen’s trash actually looks like. A home kitchen trash can is mostly food scraps, wrappers, and the occasional coffee pod. A commercial kitchen? That’s a whole different story. Most produce 20 to 50 pounds of waste a day, depending on the volume of food they prepare. Break down that waste, and you’ve got three main types: food waste (peelings, scraps, unused prep ingredients), packaging (cardboard from produce deliveries, plastic shrink wrap, sauce containers), and general non-food trash (worn-out gloves, paper towels, broken kitchen tools). The ratio shifts a lot by type of kitchen. A pizza place, for example, generates a ton of cardboard boxes—often 10 to 15 pounds worth a day—because every pie ships in a corrugated box. A fine-dining restaurant, on the other hand, might produce more food scraps, maybe 20 to 25 pounds a day, and less packaging. A school cafeteria? We’re talking 50 pounds a day easy, with extra food waste from plated meals that get tossed, plus packaging from bulk deliveries.
That’s why the first step to sizing a large kitchen trash can is auditing your waste for 2 to 3 average days. I recommend this to every customer, even if they’re in a hurry. Grab a few bins, mark them for each waste type, weigh what you throw out each day, and you’ll have a baseline. If you’re a small café that only does breakfast and lunch, your waste might peak at 10 gallons an hour during morning rush, so a 32-gallon can would hold that without overflowing by the end of the shift. A full-service dinner spot that does 200 covers a night? Their peak waste hits right after closing, when they’re cleaning up prep scraps from the day, so their can needs to hold 40 to 60 gallons minimum. I’ve seen customers skip this step and end up with a 20-gallon can that’s overflowing by 2 PM every day, leading to pest issues, spills on the floor, and extra trips to the dumpster.
Now, let’s talk about the actual capacity of large commercial kitchen trash cans. Unlike home cans, which are measured in smaller gallons, large kitchen models start at 20 gallons and go all the way up to 96 gallons or more, often called “rollouts” or “dump bins” for high-volume operations. The sweet spot for most mid-sized restaurants (50 to 150 seats) is 44 to 60 gallons. Why? Because that size balances capacity and maneuverability. A 44-gallon can holds the waste from an average busy day without being so big you can’t slide it under a prep counter or next to a dish station. A 60-gallon is better for larger operations that do 150+ seats, or places that generate a lot of cardboard or food scraps. For very high-volume spots—like stadium concessions, hotel banquet kitchens, or full-service hospital cafeterias—you’re looking at 70 to 96 gallon capacity. These big, wheeled bins can hold multiple days of waste between dumpster pickups, which is a huge time-saver because commercial kitchens usually only get trash pickups 2 to 3 times a week, not every day.
But here’s the thing: capacity isn’t just about the number on the label. A lot of suppliers advertise their cans as “50 gallons” but that’s the total volume, including the empty space above the liner, not the usable space. You have to account for the “fill level”—the point where the bag is full enough to close without spilling, but not so full it rips. For most large kitchen cans, usable capacity is about 75% of the total labeled volume. So a 50-gallon can only holds about 37 to 40 gallons of actual waste before it’s full. That’s a common mistake. If you need enough space for a full day’s waste, you can’t just go by the labeled number—you have to adjust for that usable fill space. I always tell customers to add 20 to 25% to their daily waste estimate to account for that. If you produce 30 gallons of waste a day, you’ll need a can with at least a 38 to 40 gallon total capacity, not 30.
Another factor most people overlook is the type of waste and how it compacts. Cardboard, for example, takes up way more space than food scraps if it’s not flattened. A stack of unflattened cardboard boxes can take up half of a 50-gallon can in no time. That’s why so many commercial kitchens get a separate, smaller can just for cardboard, or get a larger can for general waste that has extra space. Food scraps, on the other hand, are denser—they take up less volume, but weigh more. A 50-gallon can full of vegetable peels might weigh 40 pounds, while a 50-gallon can full of unflattened cardboard might only weigh 15 pounds, because the cardboard is light and airy. If you’re composting food waste, that changes things too. A lot of places now have separate compost bins for food scraps, and those are often sized the same way as general waste, but you have to make sure the can is compatible with compost liners, which are often thicker and fit a bit differently.
Practical kitchen space is another big one. Even if you know you need a 60-gallon can, if you only have a 2-foot gap between your dish machine and the wall, that can won’t fit. Large kitchen trash cans come in different shapes too—round, square, rectangular. Rectangular cans fit better in narrow spaces, while round cans tend to have a slightly higher usable volume because they don’t have corners that go to waste. I always advise customers to measure the exact space they have available, not just go by the gallon size. A 44-gallon rectangular can might be 24 inches wide and 30 inches tall, while a 40-gallon round can is 26 inches wide and 28 inches tall, so the round one takes up more floor space even though it’s smaller in gallons. It’s a trade-off between capacity and footprint that every kitchen has to work through.
We also have to talk about local regulations, because that’s non-negotiable. A lot of cities and counties have rules about how much trash you can have stored in a kitchen at any time, to prevent pest issues and keep grease buildup (from food waste) under control. Some places require that waste cans be covered to keep rodents out, which also affects how much you can fit in them if the lid has to close fully. For example, if your local code says you can’t have trash more than ¾ full because of the lid requirement, that cuts your usable capacity by even more. I had a customer in Chicago a few years back who ordered a 70-gallon can, only to find out the city’s health code required all waste to be stored in covered cans that only filled to 60% capacity. That meant he was effectively only using 42 gallons of the can, so he had to return it and get a 50-gallon instead, which worked perfectly. Always check with your local health department or waste management company before settling on a size—they’ll have specific rules for your area.
As a supplier, I’ve seen the wrong size can cause all kinds of problems. Too small, and you’ve got overflowing bags on the floor, which are slip hazards, attract pests, and get your kitchen cited during health inspections. Too big, and you’re wasting money on a can that takes up space you could use for prep tables or storage, plus you’re paying for a bigger can than you actually need. I had a coffee shop customer last year who bought a 96-gallon dump bin because he thought it would hold all his waste, but his kitchen only had 20 inches of space for a trash can. The 96-gallon was 36 inches wide, so it stuck out into the walkway every time he pulled it out. He ended up selling it to a caterer and getting a pair of 32-gallon cans that fit perfectly side by side. That’s the kind of real-world example I love to share with people, because it’s not just about numbers—it’s about how the can works in their specific kitchen.
Let’s put this all together with a few examples to make it concrete. If you’re a small, 10-seat café that does breakfast and lunch only, with most waste being food scraps and small cardboard delivery boxes: your daily waste is about 10 to 15 gallons. So a 20 to 30-gallon large kitchen trash can works perfectly. If you’re a medium restaurant, 50 seats, open for lunch and dinner, with 100 covers a day, average waste is 25 to 35 gallons a day. That means a 44 to 50-gallon can is ideal. For a large restaurant, 150 seats, 300 covers a day, with a lot of packaging from bulk supplies: daily waste is 40 to 50 gallons, so a 60 to 70-gallon can is the sweet spot. For a high-volume operation like a mall food court kiosk, stadium concession stand, or hotel banquet kitchen: daily waste is 60+ gallons, so you’re looking at 75 to 96-gallon wheels bins.
And remember, you don’t have to stick to one size. A lot of operations use two cans: one smaller, 20 to 30-gallon can for food prep scraps near the station, and a larger, 50 to 60-gallon can for general waste near the back door that gets taken to the dumpster or compactor. That way, you don’t have to walk across the kitchen every time you have a scrap to throw away, and the larger can holds all the waste from the whole day. It’s a setup that works really well for mid-sized to busy kitchens.
At the end of the day, sizing a large kitchen trash can is about balancing waste volume, available space, local rules, and how your specific operation works. It’s not a guessing game when you have the right data and a clear understanding of your unique needs. If you’re still unsure what size is right for your kitchen, don’t hesitate to reach out to talk through your setup. We work with all kinds of foodservice operations, from tiny cafes to large hotels, and we can help you pick the perfect can that fits your space, your waste, and your budget. Whether you need a single can for your back of house or a full set of bins for a multi-location operation, we’re here to help you find the right solution.
Square Shape Sharps Container References
- National Restaurant Association. (2022). Commercial Kitchen Operations and Waste Management Best Practices. National Restaurant Association Publications.
- U.S. Environmental Protection Agency. (2021). Food Waste Prevention and Management Guidelines for Commercial Food Service. EPA Office of Waste Management.
- Food and Drug Administration. (2023). Commercial Kitchen Health Code Requirements for Waste Storage. FDA Food Safety and Inspection Service.
- Waste Management Inc. (2022). Commercial Trash Sizing Guide for Restaurants and Foodservice Operations. WMI Industry Insights.
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