How Much Does a Yard of Concrete Weigh? (2026 Guide)

When you plan any concrete project, from a new driveway to the base for an outdoor kitchen, one question comes up fast. How much does a yard of concrete weigh? The answer drives your delivery logistics, your structural planning, and even your delivery costs, so it pays to get it right before the truck rolls up.

A standard cubic yard of concrete weighs about 4,000 pounds. That figure is worth memorizing, because almost every other calculation on a job site starts from it.

How Much Does One Cubic Yard Weigh?

A cubic yard is a volume of 3 feet by 3 feet by 3 feet, which works out to 27 cubic feet. A conventional concrete mix runs about 150 pounds per cubic foot, so a full yard lands right around 4,050 pounds. Most contractors round to 4,000 pounds, or two tons, for quick estimates.

Depending on the mix, aggregate, and moisture, a yard can range from roughly 3,600 to 4,050 pounds. For a homeowner, that is like parking two small cars on a single square of ground, which is exactly why the soil and any structure below a pour have to be ready for the load.

At Modern Yardz here in San Diego, we build those weights into every plan, so the finished project is both good looking and structurally sound.

Standard Concrete Weight Breakdown

Bagged mix is fine for small repairs, but once you pass about half a yard, ready mix delivery is usually cheaper and far less work.

What Factors Change the Weight?

The 4,000 pound average is a starting point, not a fixed rule. A few things move the number.

• Aggregate type. This is the big one. Standard mixes use dense gravel and crushed stone. Lightweight aggregates like expanded shale, clay, or slate can drop a yard to around 3,000 pounds. Heavy aggregates like barite or magnetite push high density concrete past 6,000 pounds per yard.
• Water to cement ratio. More water thins the mix and slightly lowers density. It also lowers strength, so a good crew keeps it tight.
• Air content. Air entrained concrete has tiny bubbles added for freeze and thaw resistance. That makes it a touch lighter than non air entrained mixes.
• Admixtures. Accelerators, retarders, and similar chemicals barely move the total weight, though they change how the concrete behaves.

Wet vs. Cured Concrete

Here is a point that trips people up. Wet concrete and cured concrete weigh almost the same. You might expect fresh, water heavy concrete to be heavier, but it is not by much.

During curing, water reacts with the cement in a process called hydration and becomes part of the hardened mass. Some surface water evaporates, but the concrete also densifies as it sets, so the two effects roughly cancel out. A standard mix stays close to 4,000 pounds per yard from the day it is poured through full cure.

The practical takeaway is simple. Plan for the full weight from the start, wet or cured, because the difference is negligible for load calculations.

Does Reinforcement Add Weight?

Yes, though usually less than people expect for residential work. Steel is far denser than concrete. Concrete runs about 150 pounds per cubic foot, while steel is about 490 pounds per cubic foot.

For a typical slab with 6 by 6 inch wire mesh, the steel adds only a few pounds per yard, which you can ignore. In a heavily reinforced footing, a large retaining wall, or a commercial foundation packed with rebar, the steel can add hundreds of pounds to the total. On those jobs we always calculate concrete and steel together to size the footings and support correctly.

How Many Yards Fit in a Concrete Truck?

Most standard ready mix trucks, the drum mixers you see on the road, carry between 9 and 11 cubic yards. The exact figure depends on truck size and local road weight limits.

At 4,000 pounds per yard, a full 10 yard truck is hauling around 40,000 pounds, or 20 tons, of concrete. That is why a clear, stable path to the pour matters. A soft lawn or a fragile existing slab will not survive a loaded mixer, so access is part of the plan, not an afterthought.

Why the Weight Matters

Concrete weight is not just trivia. It shapes two real parts of every job.

• Delivery. Weight sets the truck size, the number of loads, and the access route. Overloading a truck is illegal and dangerous, so a large pour means multiple loads and tighter scheduling.
• Structural support. Every slab, footing, and wall loads the ground below it. Engineers size footings, reinforcing, and drainage around that load to prevent settling and cracking down the road.

Get the weight right up front and the rest of the project stays on schedule and on budget. If you are planning a patio, driveway, or foundation in San Diego, the Modern Yardz team handles the mix and the load details so you do not have to.