Dumpster sizes for roll-off containers are given in cubic yards, the amount of space inside the container. The numbers you hear most in Los Angeles are 10, 20, 30 and 40 yards. Picking between them is easier once you know what a yard really is, how to estimate the volume of a job, and why weight sometimes matters more than space.
Dumpsters Los Angeles is an independent referral site, not a dumpster company. When you call or send the form, the site’s operator passes your request to an independent roll-off provider serving your part of Los Angeles or LA County, which quotes, delivers and hauls the container.
What a yard is
One cubic yard is a cube three feet long, three feet wide and three feet high: 27 cubic feet. Multiply and the common sizes come out like this.
| Container | Cubic yards | Cubic feet of space |
|---|---|---|
| 10 yard | 10 | 270 |
| 20 yard | 20 | 540 |
| 30 yard | 30 | 810 |
| 40 yard | 40 | 1,080 |
Outside dimensions are not standard. Two providers’ 20 yard containers can differ in length and wall height, and the difference matters if your driveway is tight or if you are lifting debris over the side. Ask for the length, width and height of the container you are offered.
How big is each size in practice
10 yard
The smallest common roll-off. It suits a bathroom tear-out, a small garage clearout, or heavy material like concrete, brick or dirt in a load that stays within the weight the quote includes. Its low walls make loading heavy items easier.
20 yard
The size most often asked about for home projects: a kitchen remodel, new flooring through a house, a roof on a smaller home, or a sizeable cleanout.
30 yard
For bigger renovations, additions and larger interior demolition, where debris comes out over a couple of weeks.
40 yard
The largest common size, for large volumes of bulky, light material: commercial cleanouts, big demolition of light construction, sites with steady waste. Its tall walls make it harder to throw heavy items in.
Estimate your job in three steps
- Picture the debris piled up loosely. A pile three feet deep over a nine-foot by nine-foot floor is nine cubic yards.
- Add a margin for odd shapes. Furniture, branches and broken cabinets leave air gaps; loose debris never packs like a box.
- Round up to the next container size, unless the debris is heavy, in which case ask about weight first.
Not sure?
Describe the job in the form, room by room. An independent provider who sees the description can suggest a size, and can say whether a swap partway through would suit better than one large container.
Heavy material changes the answer
Every quote includes a set amount of weight, and dense material reaches it fast. Concrete, brick, tile set in mortar, plaster, dirt, gravel and roofing shingles are the usual culprits. A container full of them can be far over the weight included even if it looks half empty. Providers often ask for heavy material in a smaller container, or keep certain containers for clean concrete or dirt only. Tell the provider what is going in so the size and the weight in the quote fit the load.
One big container or a swap
A larger container is not always the better answer. If the driveway is short, if the project runs in phases, or if heavy and light debris come out at different times, a smaller container swapped when full can work better than one large container that sits for weeks. A swap means the truck hauls the full container and drops an empty one in the same visit. Ask the provider how it charges for a swap compared with a larger size, and decide on the numbers rather than on the biggest box.
Size and space go together
The right container also has to fit where it will sit. Measure the driveway or pad, check the height under wires and branches, and leave room for the truck to back in straight and tilt its bed. If the container has to go on the street in Los Angeles, the dumpster permit Los Angeles guide explains the approvals involved.
Once you have a size in mind, the page on roll off dumpster rental Los Angeles covers the rest of the rental, and the what can you put in a dumpster guide covers what goes in.
Questions people ask
What are the standard dumpster sizes?
Roll-off containers are most often 10, 20, 30 or 40 cubic yards. Some providers keep other sizes too.
How big is a 20 yard dumpster?
It holds 20 cubic yards, which is 540 cubic feet of space. Its outside length and height vary by provider, so ask for the exact dimensions.
How big is a 40 yard dumpster?
It holds 40 cubic yards, or 1,080 cubic feet. It is usually used for large volumes of light, bulky material.
Why would a provider suggest a smaller dumpster for concrete?
Concrete is heavy. A container reaches the weight included in the quote long before it is full, so a smaller container or a separate load often suits it better.