What Size Dumpster Do I Need? (Volume, Weight, and When a Bag Is Enough)

A cubic yard is a 3×3×3-foot cube. The number painted on the box is volume. The bill is often weight. Those are different problems.

You do not need a zip code to size a dumpster. You need to know what a “yard” is, what you are throwing out, and whether the stuff is heavy.

Dumpsters.com’s glossary defines a cubic yard as a space three feet wide, three feet long, and three feet high. Their weight-calculator page says you get cubic yards by multiplying length × width × height in feet and dividing by 27. A 10-yard dumpster is 10 of those cubes — 270 cubic feet of space. It is not 10 feet long. It is not 10 tons.

Landfills charge by the ton. Haulers bake a weight allowance into the rental and bill overage after the truck hits the scale. That is why a box that still looks half empty can be the expensive one.

This page is a national size and weight guide. It is not a quote form. Where companies disagree, the disagreement is the point.

30-second chooser

Answer three questions. Then stop.

1. What are you throwing out?

2. How big is the pile, roughly?

Use whatever you can actually see: pickup-truck loads, rooms, or roof squares (one square = 100 sq ft of roof). Dumpsters.com estimates a standard pickup-truck bed at 2–3 cubic yards. Their 20-yard page says that size holds about six of those loads, or 110–130 thirty-three-gallon bags. Hometown Dumpster Rental’s size guide says a 20-yard holds roughly 10 pickup-truck loads. Same size, different truck math. Treat truck-load charts as that company’s picture, not a tape measure.

3. Is any of it heavy?

Concrete, brick, dirt, asphalt, tile, wet drywall, stone counters, roof shingles. If yes, stop thinking bigger is safer. Dumpsters.com’s size page is blunt: dense stuff like concrete, brick, dirt, or shingles should go in a 10-yard, and you fill it only partway. Their weight-calculator page offers a “heavy debris dumpster” in a 10-yard size that they say can hold up to 10 tons — a different product from a mixed-waste 10-yard with a 1–2 ton allowance.

A bigger box with a modest included-tonnage cap is how people get an overage on a load that still has daylight in it.

Size chart (the number is volume; the walls are not standard)

Roll-off sizes are cubic yards of interior volume. Dumpsters.com: “our containers are sized according to internal volume. External dimensions can vary depending on the local hauler and dumpster manufacturer.” Hometown, updated November 10, 2025: dimensions “are not standardized” and “may vary from one hauler to the next.”

The tables below are those companies’ typical exteriors, not a national spec.

Dumpsters.com typical exteriors and truck-load estimates

Fetched August 30, 2026 from their size guide and “what size” page. Pickup-truck estimates are theirs, based on a bed they say typically holds 2–3 cubic yards.

Dumpsters.com also lists a 12-yard (14' × 7.5' × 4', 3–4 truckloads, 1–2 tons). Not every hauler stocks it. Their 20-yard product page repeats 22' × 7.5' × 4.5' in the prose, then a table on the same page lists height as 4 feet. Even one company is not perfectly consistent. Ask the hauler for the box they will actually drop.

Their 20-yard page: about 110–130 thirty-three-gallon trash bags, 7–10 day rental, and (their words) 60 feet of flat paved space plus 23–25 feet of vertical clearance for the truck.

Hometown Dumpster Rental typical exteriors (November 10, 2025)

They do not publish a 15-yard row on this chart.

Notice the spread. Dumpsters.com’s typical 10-yard is 14 feet long and 7.5 feet wide, with 1–2 tons. Hometown’s typical 10-yard is 12 feet long and 8 feet wide, with 2–3 tons. A 40-yard on Dumpsters.com is 4–5 tons; on Hometown it is 6–8 tons. The yard number does not lock the tonnage. The contract does.

Hometown also notes most roll-offs are about 8 feet wide, and that the back usually has one 8-foot door or two 4-foot doors. Budget another 4–8 feet behind the box if you want to walk a tub or a stack of cabinets through the door.

Bagster (official, one size)

Waste Management’s Bagster is not a roll-off. Official FAQ, fetched August 30, 2026:

• One size only
• 3 cubic yards / 606 gallons (not 3.3)
• 8 ft × 4 ft × 2 ft 6 in
• 3,300 lb max
• At most 1 cubic yard of heavy materials (dirt, brick, rock, sod, concrete, sand, asphalt, plaster, stucco). WM says they will not collect a bag loaded with more than one cubic yard of heavy debris.
• Collection fee is separate and paid to WM when you schedule. Pickup is typically within five business days of scheduling.
• The bag is not waterproof.
• It must sit on your property (not the street), generally within 16 feet of the street/alley/driveway, with about 18 feet of vertical clearance for the crane.

WM’s Bagster product page lists example fills under the 3,300 lb cap: 47 sheets of ½-inch 4×8 drywall; 1,280 sq ft of ¾-inch hardwood; 800–1,000 sq ft of roofing shingles; 900 sq ft of carpet or tile; and that same 1 cubic yard of heavy materials.

Home Depot sells it as “WM Bagster Dumpster in a Bag (Holds up to 3,300 lb.),” Internet #202228840, model 775-658, and lists 606-gallon capacity. That is the bag, not the haul.

Project → size (with the disagreement shown)

There is no single correct size for “a kitchen” or “a roof.” Published charts disagree because they optimize for different constraints: volume vs included tons, one layer vs two, 3-tab vs architectural, a clean shingle load vs mixed debris.

Kitchen: 10 vs 20 vs 30

Dumpsters.com, on the same site, points at three different boxes:

• Size chart: 15-yard “best for” includes kitchen remodels.
• 12-yard page-level copy: remodeling a kitchen or pulling flooring.
• FAQ: “For large kitchen remodels, a 20 yard dumpster typically works well.” Bathroom remodels “usually require a 10 yard or 15 yard.” More extensive remodeling: 30-yard.
• Kitchen-specific FAQ on the sizes page: “most people choose a 20 yard… old cabinets, countertops, flooring and appliances from a full kitchen tear-out.”

Angi’s dumpster-sizes article (project table on that page): kitchen remodel 20 or 30-yard. Bathroom remodel 15 or 20-yard.

Hometown’s ultimate size guide: a 10-yard “may be appropriate” for a small kitchen remodel and a bathroom renovation.

So the live charts, for a kitchen, span 10, 12, 15, 20, and 30. That is not sloppiness. A cabinet-and-counter swap is mostly bulky wood and laminate. A gut-to-studs kitchen with tile floors, mortar, and a granite slab is a weight problem wearing a volume costume.

Practical read:

• Partial update (counters, or cabinets only): the 10-yard end of the range is the one Hometown is describing.
• Full tear-out of a standard kitchen: Dumpsters.com’s “most people choose 20” is the center of gravity.
• Gut plus adjacent rooms, or lots of masonry: Angi is why 30 is on the table.

If the hauler’s 20-yard only includes 2 tons, and you are throwing stone and tile, ask about included tons before you congratulate yourself on the extra airspace.

First-person, not a rule: r/HomeImprovement threads from 2016–2023 (remodel, small-condo drywall, deck) are people getting different answers from different companies and then asking the internet. One kitchen-demo thread’s replies split 20-yard vs 30-yard. That split matches the charts. It is not a measurement.

Roof: squares × layers, not “always 20”

A roofing square is 100 sq ft of roof. Debris weight is squares × layers × pounds per square, plus felt and any rotten decking.

What the companies actually say:

Dumpsters.com’s size FAQ: “A 10 yard dumpster is our recommendation for throwing away roofing materials… fill the dumpster partway.” Their weight-calculator page: most common roofing dumpster is 10 cubic yards. Architectural shingles: one of those dumpsters for less than 40 squares, two for 40–60, three for 60–80. Three-tab: one dumpster under 60 squares, two for 60–80.

Angi: roofing 10 or 20-yard. They also warn that shingles are heavy, so a too-large box can put you over the weight limit.

Hometown ultimate guide: 10-yard for about 1,500 sq ft of single-layer shingles; 20-yard for 2,500–3,000 sq ft single-layer.

Hometown’s shingle-specific guide (updated January 19, 2023): one square typically 250–400 lb (3-tab vs architectural). They put an average house at 1,500–2,000 sq ft (15–20 squares), so 3,750–8,000 lb, roughly 2–4 tons, plus 50–100 lb per square for plywood/felt. Their roof-size table (3-tab): 15 squares → 10-yard; 20–25 squares → 20-yard; 30 squares → 30-yard; 40 squares → 40-yard. Two layers doubles it. Their example: 15 squares × 250 lb × 2 layers + 750 lb of extras = 8,250 lb — they say rent for at least 5 tons, preferably 6.

DumpsterBoard’s roofing guide (fetched August 30, 2026): most residential roofs 1,500–3,000 sq ft, one layer → 10- or 20-yard. Their chart goes to a 30-yard for 4,000+ sq ft or a two-layer tear-off. They publish ~150–350 lb per square overall, and ~230 lb (3-tab) / ~350 lb (architectural) as their figures.

Dumpsters On Demand (Nashville; fetched August 30, 2026) is the outlier on volume: they say a 15-yard “can typically hold between 35 and 40 squares” of a single layer, and a 10-yard around 25 squares, with one square “around 250 pounds.” 40 squares × 250 lb is 10,000 lb — five tons — which only works if that 15-yard’s weight allowance is huge. Hometown would put 40 squares on a 40-yard. Dumpsters.com would send two or three 10-yard roofing boxes for that many architectural squares.

Why they disagree: a 10-yard has the volume for a large tear-off. Hometown says so, then immediately says it “rarely can accommodate the weight.” A 20-yard with a 2-ton cap is worse than a 10-yard with a 3-ton cap if you are loading architectural shingles. Layer count doubles the tons without doubling the footprint of the house. Architectural vs 3-tab is hundreds of pounds per square. Included tons and overage per ton are local.

Do this, not a slogan:

1. Squares = roof sq ft ÷ 100.
2. Multiply by layers.
3. Ask the hauler what they use for lb/square for your shingle, and what tons are included in that box.
4. If two layers or a steep/cut-up roof, size the weight, then pick the smallest box that can legally carry it — or plan a swap.

WM’s own Bagster page says a bag can take 800–1,000 sq ft of shingles under the 3,300 lb cap. That is a small, light, single-layer scrap job, not a house tear-off, and the 1-cubic-yard heavy-debris rule still applies in markets that treat shingles as heavy.

Cleanout: bulky, light, easy to under-guess

Angi: home cleanout 15 or 20-yard. Dumpsters.com: most whole-house cleanouts 20; smaller home or apartment 15; multi-generational or lots of storage, consider 30. Estate: they often point at 30, or 40 if the house is large. Hometown: 10-yard for small-to-medium basement/garage/attic; 20 for medium of the same.

Furniture, bags of clothes, and cardboard fill a box by volume. People look at an empty 20-yard and think they over-ordered. Dumpsters.com calls the 20-yard their most popular size for that reason: it fits a standard driveway and swallows a houseful of stuff.

Weight is the sleeper only if you also have books, wet junk, or a pile of tile leftover from a remodel. For a paper-and-sofa cleanout, volume wins. Leave the 10-yard for small rooms or when the driveway is tiny.

Concrete, dirt, brick

Dumpsters.com: 10-yard is “best for concrete, dirt and other heavy materials.” Same page, later: you cannot put heavy materials in every size; concrete, brick, dirt, or shingles should go in a 10-yard and only partway. Their weight calculator: a heavy-debris 10-yard, up to 10 tons, with extra boxes if you have more than 10 tons.

Hometown: a small volume of concrete may still need you to “size up slightly” so the weight allowance fits — that is sizing the tons, not chasing a 40-yard of air.

Bagster official: one cubic yard of dirt/brick/concrete/etc., then they will not collect.

If the pile is inert fill, ask whether the hauler has a low-boy / heavy-debris rate. Mixed household trash on top of concrete is how a cheap 10-yard becomes a contaminated load.

Deck and mixed construction

Hometown: 10-yard for a deck about 250 sq ft or smaller; 20-yard for about 400 sq ft. Dumpsters.com lists deck removals under the 20-yard and 15-yard (“tearing out a small deck”). Angi does not isolate decks.

Construction / addition: Dumpsters.com 30 (remodeling) and 40 (construction). Angi whole-home remodel 30 or 40.

Decks are awkward lumber. Packed tight they are less volume than they look; tossed in they eat a 20-yard. First-time renters on r/HomeImprovement have asked whether a 10-yard is 270 cubic feet (yes: 10 × 27). That is the right question. The wrong question is “what size does the salesperson want to deliver.”

The expensive mistakes

1. Overweight on a half-full box

This is the roof/tile/concrete lesson again. Dumpsters.com: going over the included limit is a pro-rated per-ton overage because landfills charge by the ton. Hometown’s quote-explainer (their figures, not a national rate): overage often $50–$100 per ton over the allowance. Their shingle guide: $50–$80 per ton typical, as high as $120 in some areas — Hometown’s claim, page dated January 19, 2023.

Wet loads weigh more. Hometown’s Bagster-vs-10-yard piece: tarp the open top if rain or snow is coming. Bagster’s own FAQ: the bag is not waterproof.

2. Second haul vs sizing up

Hometown’s ultimate guide, still live as of the November 10, 2025 update: if you squeeze into a too-small box, the worst case is paying for two dumpsters and “instantly doubling your intended budget.” Then, in their words: “On average, sizing up costs less than $100 and can easily save you money in the long run.” That is Hometown’s claim, not a national tariff. It is about stepping up one size at booking, not about overweight fees.

Dumpsters.com’s answer if the box is too small: empty-and-return (swap), or order more than one. Ask what that swap costs here before you “save” on a 10-yard.

3. Bagster official limits

Not folklore. WM/Bagster FAQ:

• 3 cubic yards and 3,300 lb.
• 1 cubic yard cap on heavy debris, or no collection, and extra fees if a scheduled collection fails because of overload.
• Yellow lifting straps must still meet above the bag.
• Do not drag it after filling.
• Prohibited list includes paint, oil, batteries, fluorescent bulbs/ballasts, appliances, electronics, food waste, railroad ties, tires, medical waste, pesticides, chemicals. Yard waste is banned in some zips.

The $30-ish bag on a store shelf is not the job. Collection is a second bill to WM.

4. Street permit

Dumpsters.com 20-yard page: private driveway or jobsite, typically no permit. Street placement, you may need one from the city. Their range: $20 to $150 in most places, sometimes more in big metros. Angi: local rules dictate where you can place a dumpster and whether you need a permit. Bagster must stay on private property; WM will not pick it up off the curb.

HOAs are a separate “permit.” Bagster’s FAQ suggests checking with the HOA before you fill.

5. Prohibited items

Angi’s sizes article flags fluorescent bulbs, paint, tires, household cleaners, and food waste as commonly banned, and says to ask before you rent.

Dumpsters.com’s prohibited-items page (fetched August 30, 2026) is longer. Never-in-the-box on that list includes vehicle batteries, lithium batteries, tires, hot water tanks, inks and resins, railroad ties, wet paint and lacquers, fluorescent bulbs, Freon-bearing appliances unless the refrigerant is recovered, household chemical cleaners, oils/fuels/propane, telephone poles, and hazardous waste generally. Restricted (varies by market): mattresses, some appliances, electronics, tree stumps, dirt, food waste, yard debris.

Bagster’s list is similar and, unlike many roll-offs, also refuses appliances and electronics outright.

If a prohibited item is in the box, Dumpsters.com says they may refuse pickup (trip fee) or the landfill may add a prohibited-item fee. Ask for the list that applies to this load.

Bagster vs a 10-yard vs paying someone to haul it

This is a decision, not a product pitch.

When the bag is enough

WM’s comparison page: Bagster is for smaller DIY jobs that do not need a full-size dumpster. Official cap: 3 cubic yards, 3,300 lb, and only 1 cubic yard of heavy stuff. No rental clock; you buy it, fill it, then book collection.

Good fit: a truly small, light pile — closet / small garage corner / one room of carpet — in a market WM actually services, with a legal place on your property 16 feet from the street.

Bad fit: roof tear-off, concrete, a kitchen gut, anything taller than 2'6" that you cannot break down, or a maybe-it’s-6-yards pile.

When two bags cost more than one 10-yard

Do not treat the next numbers as the U.S. price. They are named pages, dated.

Hometown Dumpster Rental, “Bagster Pickup Cost vs Renting a 10 Yard Dumpster,” updated June 6, 2023 (their averages):

• Bag purchase: $20–$30
• Pickup/disposal: $130–$320
• Total: $150–$350, or $50–$117 per cubic yard
• 10-yard rental: $250–$450, or $25–$45 per cubic yard, typically 5–7 days, 2–3 tons included, overage $75–$100 per ton (their figures)
• Their conclusion: a second Bagster is often more money and still less room than one 10-yard

Dumpsters.com, “Bagster vs. Dumpster,” last updated June 22, 2026 (their figures):

• Bag: $30 + pickup $100–$300 → $130–$330 total
• Roll-off range on that page: $286–$1,538, “national average $663”
• If the job needs more than one bag, “needing two means paying for a separate pickup each time. This often costs more than renting a 10 yard dumpster”
• Bathroom example on that page (their ranges): 3–5 bags $390–$1,650 vs a 10- or 15-yard $305–$1,304

RightDumpster, 2026 comparison (their figures): bag $30, pickup $150–$350, total $180–$380 ($60–$127/yd); 10-yard $300–$500 ($25–$40/yd). Two bags: $360–$760 for 6 yards vs one 10-yard for 10 yards.

Three publishers, three spreads, same shape: the bag is not cheap per yard once pickup is in, and two bags can overshoot a 10-yard. Your zip will not match any of those bands exactly. Check WM’s collection-fee lookup and a local 10-yard quote if you are on the fence. This page is not that quote.

When you should pay for labor instead

A dumpster is a container. You load it. Junk removal is a crew plus a truck. Use the crew when:

• You cannot or will not carry the stuff (stairs, no driveway, HOA forbids a box).
• The pile is mixed furniture you do not want to break down to 2'6" (Bagster height) or toss over a 3.5–4.5-foot wall.
• The job is smaller than a 10-yard but you do not want a bag sitting in the yard for a five-business-day window.

That is a different product. Price it as labor, not as cubic yards.

The three-way split

What to ask the hauler before you book

Get this in the quote, in writing if you can.

1. Included tons. Not “the 20-yard.” The tons in this rate for this debris type.
2. Overage per ton. Pro-rated? Rounded up? Different rate for shingles vs mixed C&D?
3. Rental days. Dumpsters.com typically 7–10 on the 20-yard page; Hometown’s 10-yard comparison uses 5–7. What is extra per day after that?
4. Swap / empty-and-return fee. If you fill it Wednesday and still have a garage.
5. Driveway vs street. Who pulls the permit, what it costs, how long it takes. Dumpsters.com’s published band is $20–$150 in most places.
6. Door swing and truck clearance. Hometown: extra 4–8 feet for the door. Dumpsters.com: ~60 feet of unobstructed paved length and 23–25 feet of overhead. Trees, wires, a low carport: say so.
7. Heavy vs mixed. Will they accept shingles-only? Concrete in this box? Or do they want a separate inert load?
8. Prohibited list for this landfill. Paint, tires, batteries, appliances, e-waste, food. Local extras (mattresses, dirt, yard waste).
9. What happens if it rains. Tarp? Wet-weight overage is still overage.
10. The actual L × W × H of the box they will deliver. Not the blog chart.

If two haulers recommend different sizes, ask each what tons they assumed. That usually explains the fight.

A cubic yard, one more time

Dumpsters.com: a yard is 3 × 3 × 3 feet. Divide cubic feet by 27. The stencil on the steel is how much air is inside. The invoice is how many tons hit the scale, minus whatever tons they already sold you.

Pick the box that fits both. When the material is heavy, the smaller box is often the adult choice.

Sources

Fetched or search-indexed August 30, 2026 unless a page carries its own date.

Size, volume, weight

• Dumpsters.com, “What Size Dumpster Do I Need?” — https://www.dumpsters.com/resources/what-size-dumpster-do-i-need
• Dumpsters.com, dumpster sizes — https://www.dumpsters.com/sizes/dumpster-sizes
• Dumpsters.com, 20-yard product page — https://www.dumpsters.com/sizes/20-yard-dumpster
• Dumpsters.com, cubic yard glossary — https://www.dumpsters.com/entity/cubic-yard
• Dumpsters.com, weight calculators (shingles / heavy debris) — https://www.dumpsters.com/resources/dumpster-weight-calculator
• Dumpsters.com, prohibited items — https://www.dumpsters.com/resources/prohibited-items
• Hometown Dumpster Rental, “The Ultimate Guide to Dumpster Sizes,” updated November 10, 2025 — https://www.hometowndumpsterrental.com/blog/the-ultimate-guide-to-dumpster-sizes
• Hometown Dumpster Rental, “How to Choose the Right Size Dumpster,” updated March 2, 2023 — https://www.hometowndumpsterrental.com/blog/how-to-choose-the-right-size-dumpster
• Angi, “What Size Dumpster Do I Need?” — https://www.angi.com/articles/dumpster-sizes.htm (Cloudflare blocked a direct fetch; project table and $300–$480 range taken from indexed excerpts of that URL)

Bagster / WM

• Bagster FAQ (product specs, 3,300 lb, 1 cubic yard heavy cap, prohibited items, placement) — https://thebagster.com/products/questions_answers.aspx?tab=using-the-bagster-bag
• Bagster vs dumpster — https://thebagster.com/how_it_works/bag_or_dumpster.aspx
• WM Bagster — https://www.wm.com/us/en/home/bagster
• Home Depot SKU (title/capacity; live price page blocked) — https://www.homedepot.com/p/WM-Bagster-Dumpster-in-a-Bag-Holds-up-to-3-300-lb-775-658/202228840

Bag vs 10-yard math (each publisher’s figures)

• Hometown, “Bagster Pickup Cost vs Renting a 10 Yard Dumpster,” updated June 6, 2023 — https://www.hometowndumpsterrental.com/blog/bagster-pickup-cost-vs-renting-a-10-yard-dumpster
• Dumpsters.com, “Bagster vs. Dumpster,” updated June 22, 2026 — https://www.dumpsters.com/blog/dumpster-bag-vs-dumpster-rental
• RightDumpster, “Bagster vs Dumpster (2026)” — https://rightdumpster.com/blog/bagster-vs-dumpster

Roof / shingles

• Hometown, “Best Dumpster Sizes for Shingle Roof Replacements,” updated January 19, 2023 — https://www.hometowndumpsterrental.com/blog/best-dumpster-sizes-for-shingle-roof-replacements
• DumpsterBoard, dumpster rental for roofing — https://dumpsterboard.com/guides/dumpster-rental-for-roofing
• Dumpsters On Demand (Nashville), “What Size Dumpster for Shingles?” — https://dumpstersondemandllc.com/what-size-dumpster-for-shingles/

First-person confusion, not size rules

• r/HomeImprovement, “What size dumpster for remodel?” (2023) — https://www.reddit.com/r/HomeImprovement/comments/11qo4wg/what_size_dumpster_for_remodel/
• r/HomeImprovement, small condo reno (2016) — https://www.reddit.com/r/HomeImprovement/comments/4hr5nj/help_not_sure_what_size_dumpster_i_need_for_small/
• r/HomeImprovement, deck removal / “is 10 yard = 270 cubic feet?” (2019) — https://www.reddit.com/r/HomeImprovement/comments/c4uc0u/how_to_size_a_dumpster_rental_for_deck_removal/

Live Reddit fetches returned 403; comments are not used as numeric rules on this page.