Dumpster Size Abbreviations: What 10 Yd, 15 Yd, and 20 CY Mean (2026)

A 20 yd roll off is a dumpster with a capacity of 20 cubic yards, or 540 cubic feet. On rental listings, "yd," "cy," "cu yd," and "yard" all mean cubic yard, a volume measure and not the length of the container. If you are comparing sizes before you book, the dumpster size guide shows all three 904 Dumpster options side by side.

This article decodes the shorthand, converts yards to cubic feet and pickup loads, and explains why volume and weight are two separate limits.

What Do Yd, CY, and Cu Yd Mean on a Dumpster Listing?

All of these abbreviations mean cubic yard: a cube measuring 3 feet by 3 feet by 3 feet, or 27 cubic feet. A "10 yd dumpster" holds 10 of those cubes. The number describes how much debris fits, not how long the box is.

Common variations you will see:

The question of yd vs yard comes up often. They mean the same thing in this context. In construction, a bare "yard" nearly always means a cubic yard, never a linear yard. That is why a 20 cy dumpster, a 20 yd dumpster, and a "20 yard" dumpster are all the same product.

How Do You Convert Cubic Yards to Cubic Feet?

Multiply cubic yards by 27 to get cubic feet. One cubic yard equals 27 cubic feet, because 3 feet times 3 feet times 3 feet is 27. To go the other way, divide cubic feet by 27.

A quick example of the formula: 15 cubic yards times 27 equals 405 cubic feet. The cubic foot is the unit most building materials, such as mulch and gravel, are measured against, so this conversion helps when you are estimating debris volume. For a longer worked method, see the debris volume calculator guide.

Note that 904 Dumpster does not offer a 30 yard container. The three sizes are 10, 15, and 20 yards. Projects that need more space use two containers or a swap.

What Does Roll Off Container Mean?

A roll-off container is an open-top steel dumpster that a truck pulls onto a rail system and rolls off at your property. The name describes the delivery method. The truck tilts its frame, slides the container down to the ground, and returns later to roll it back on.

The term "roll off" and "dumpster" are used interchangeably in everyday speech. Technically, front-load dumpsters, the ones behind restaurants, are lifted by forks, while roll-offs are hauled whole. When you search for a "20 yd roll off," you are looking for this type of open-top container. The Wikipedia entry on waste containers covers the different designs if you want the broader picture.

Roll-offs sit on a driveway or other hard surface, and the 15 yd has a rear swing door for walk-in loading. Private driveway placement needs no permit in Jacksonville. A street placement does.

Exterior Dimensions for Each Size

Exterior dimensions tell you whether the container fits your driveway. Here is what 904 Dumpster uses:

The 15 yd and 20 yd have the same footprint. The difference is height, 4.5 feet versus 5.8 feet. A shorter wall is easier to toss debris over, while the taller wall adds capacity without using more driveway. These outside measurements are for planning space, and the rated capacity is what the price is based on. Plan for extra length on the delivery side so the truck has room to slide the box off. If you want to verify your driveway fits, call (904) 240-5598.

Volume Versus Weight: The Other Number on the Label

Yards describe volume. Tons describe weight. Both limits apply to every rental, and whichever you hit first is the one that matters.

In Duval County, 904 Dumpster includes 1 ton with the 10 yd, 1.5 tons with the 15 yd, and 2 tons with the 20 yd. Overage is $75 per ton, and there are no fuel or environmental fees. For light, bulky debris such as furniture and drywall, you will fill the volume first. For heavy debris such as concrete, brick, and dirt, you will hit the weight first. A cubic yard of solid concrete weighs about 4,000 pounds, which uses up two full tons by itself. Read how weight limits work across sizes before you load heavy material.

The cost per cubic yard drops as the container grows, which is useful context when choosing between sizes:

The 20 yd is the cheapest per cubic yard, but only if you will actually fill it. Paying for empty space is not a saving.

Picking a Size From the Numbers

Start with the debris type. Light household and renovation debris is usually limited by volume, so use the cubic yard figures. For a 15 yard load, that means about 5 to 6 pickup truck loads. Heavy material needs a tonnage check first.

A practical approach:

When you want help with the final pick, the pricing page lists current rates, including Clay, St. Johns, and Nassau counties, where the 15 yd is $409, the 20 yd is $459, and no 10 yd is offered.

A Worked Example: Reading a Listing

Suppose a listing reads "20 yd roll off, 2 ton included, 5 day rental." Read it in three steps. First, 20 yd is 20 cubic yards, which is 540 cubic feet and about 7 pickup truck loads. Second, 2 ton included means up to 4,000 pounds of debris is covered by the flat rate. Third, 5 day rental is the time the container stays at your property before an extra day charge applies.

That last number matters for planning. At 904 Dumpster an extra day is $15, so a 5 day rental that runs to day 7 adds $30. Compare listings on all three numbers, not only the yard count. A cheaper 20 yd with half the included tonnage can cost more once a heavy load is weighed. If a listing leaves out the weight limit or the rental days, ask before you book.

Ready to compare sizes for your project? The 20 yard dumpster rental page lists dimensions, tonnage, and booking for the most popular large size, and you can call (904) 240-5598 for help choosing.

Dumpster Sizing in Jacksonville and Northeast Florida

Listings in the Jacksonville area use the same shorthand, but availability differs by county. Duval County customers can choose 10, 15, or 20 yards. In Clay, St. Johns, and Nassau counties, the 15 yd and 20 yd are available at $409 and $459. Inside the City of St. Augustine, those sizes are $449 and $499. 904 Dumpster has been locally owned since 2016, delivers from 2797 Anniston Rd, and offers same-day delivery on orders placed before noon Monday through Saturday. Loaded containers go to Trail Ridge Landfill. Searching on a city page such as Orange Park dumpster rental shows what is available for your area.

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