Crushed Concrete Calculator
— How Much Do You Need?

Crushed concrete is one of the most versatile base and fill materials you can order. It works well across a wide range of residential, commercial, and construction projects, and its angular shape is the key reason why. Unlike smooth, rounded gravel, the jagged edges of crushed concrete pieces lock together under pressure. That interlocking structure creates a dense, load-bearing layer that holds up well under vehicle traffic and heavy loads. Add in the residual cement fines throughout the mix, and you get a material that firms up significantly once it is compacted. Common uses include driveway bases and unpaved driveway surfaces, parking lot sub-bases, road base and unpaved access roads, fill for grading and leveling uneven ground, sub-base material under concrete slabs, sidewalks, and patios, backfill behind retaining walls, and erosion control on slopes or embankments. If your project needs a material that compacts firmly, resists shifting, and holds up under load, crushed concrete is a strong and cost-effective option to consider.

Crushed concrete is a practical and affordable material, but it is not the right fit for every situation. Knowing where it falls short helps you make the right call before you place an order. The most noticeable limitation is appearance. Crushed concrete has a rough, industrial look with a gray and off-white color. If the surface will be visible and aesthetics matter for your project, you may prefer a more uniform material like crushed limestone or decorative gravel. Because crushed concrete is a recycled product, the size and consistency of individual pieces can vary more than quarried virgin aggregate. For most base, fill, and driveway applications, that variation is not a problem at all. But if your project requires a tightly controlled gradation or a specific DOT specification material, crushed concrete may not meet those requirements. The residual cement content in the material also makes it mildly alkaline. If you plan to use it in areas where plants or grass will grow directly alongside it, that is something worth keeping in mind. Finally, crushed concrete works best as a base layer or a functional unpaved surface. It is not a finished decorative material on its own. For projects where the end result needs to look polished or refined, it serves better as a foundation beneath something else.

In most cases, yes. Crushed concrete is typically one of the more affordable bulk aggregate options available, and the reason comes down to where it comes from. Because it is a recycled material processed from demolished concrete structures, roads, and buildings, the raw material cost is significantly lower than quarrying and processing virgin stone. That savings usually shows up in the price you pay. How much of a difference you will see compared to other base materials depends on your location, current market conditions, and local supply. Crushed concrete is sourced regionally, so pricing can vary from one area to another based on what is available nearby and how far the material needs to travel. Rather than working from a ballpark figure, the best way to understand what crushed concrete will cost for your specific project is to use the Hello Gravel calculator. Enter your dimensions, get a quantity estimate, and you will see current pricing for your area right away. If you want to talk through your options before ordering, the Hello Gravel team is happy to help you compare materials and find the best fit for your budget.

Crushed concrete is one of the most popular driveway materials available, and it earns that reputation for a few practical reasons. The angular pieces interlock tightly when compacted, creating a firm, stable surface that resists the shifting and rutting you get with smoother materials. The cement fines throughout the mix act as a natural binder, and the surface tends to harden slightly over time as those fines respond to moisture. The result is a load-bearing driveway that holds up well under regular vehicle traffic without the cost of asphalt or poured concrete. For a residential driveway handling everyday car and SUV traffic, a compacted depth of 4 to 6 inches is the standard recommendation. If your driveway will regularly see heavier vehicles like delivery trucks, trailers, or equipment, plan for 6 to 8 inches of compacted material to give you the structural depth you need. Crushed concrete works well as a standalone unpaved driveway surface and also as a base layer under asphalt. Many homeowners use it as a cost-effective option for long rural driveways or secondary access roads where a paved surface is not a priority. For the best results, make sure the ground is properly graded before you spread the material and that you have enough slope for water to drain away from the surface. Running a plate compactor or roller over the material after spreading makes a noticeable difference in firmness and longevity.

The amount you need comes down to two things: the area you are covering and how deep you are laying the material. Crushed concrete weighs approximately 1.4 to 1.5 tons per cubic yard, so it is straightforward to estimate from your square footage and target depth. At 4 inches of compacted depth, 1 ton of crushed concrete will cover roughly 55 to 60 square feet. At 6 inches of compacted depth, that same ton covers closer to 35 to 40 square feet. To put those numbers to work: a 1,000-square-foot driveway at 4 inches of compacted depth would take approximately 16 to 18 tons. A smaller project, like a 20-by-20-foot parking pad at the same depth, would need roughly 6 to 7 tons. These are solid working estimates, but your actual quantity depends on your exact dimensions, the condition of your sub-grade, and the level of compaction you are planning for. Soft or uneven ground may require more material than a well-prepared base. The Hello Gravel calculator is the fastest and most accurate way to get a number you can order with confidence. Enter your length, width, and depth, and it will give you a precise tonnage estimate for your specific project.