How Much Does a Yard of Concrete Weigh? Complete Weight Reference Guide

A standard cubic yard of concrete weighs approximately 4,050 pounds (2.025 tons or 1,837 kg). Wet (freshly mixed) concrete weighs 4,000–4,050 lbs/yd³, while dry (cured) concrete weighs 3,400–3,600 lbs/yd³ due to water evaporation during curing. Lightweight concrete weighs 2,800–3,200 lbs/yd³, and heavyweight concrete can weigh 5,000+ lbs/yd³.

According to our analysis of Google search results, "how much does a yard of concrete weigh" gets 3,600 searches per month with a CPC of $8.34 — indicating high commercial value. The current top-ranking pages give a quick "about 4,000 pounds" answer but miss the practical applications: knowing concrete weight is essential for calculating truck load limits, form pressure, soil bearing capacity, and removal costs. This guide covers it all with detailed tables for every concrete type.

Concrete Weight by Type

Not all concrete is the same density. The mix design, aggregate type, and moisture content all affect weight. Here's a comprehensive reference table:

How Much Does 1 Yard of 4000 PSI Concrete Weigh?

One cubic yard of 4000 PSI concrete weighs approximately 4,050–4,100 pounds (2.03 tons) when freshly mixed. The PSI rating refers to compressive strength, not weight — but higher-PSI mixes tend to be slightly denser because they use more cement and less water:

How Many 80-lb Bags of Concrete Make a Yard?

You need 45 bags of 80-lb concrete to make one cubic yard. Here's the complete breakdown by bag size:

Note: The dry bag weight (3,600 lbs) is less than the finished concrete weight (4,050 lbs) because you add approximately 450 lbs of water during mixing. That's roughly 54 gallons of water per cubic yard. For a deeper dive on bag quantities, see our guide on how many bags of concrete you need.

How Much Does Wet Concrete Weigh Per Yard?

Wet (freshly mixed, unhardened) concrete weighs 4,000–4,050 pounds per cubic yard. This weight is critical for several practical applications:

• Truck loading: A standard concrete mixer truck holds 8–10 cubic yards, meaning a full load weighs 32,000–40,500 lbs. Most trucks have a legal weight limit of 40,000 lbs for the load alone (80,000 lbs gross vehicle weight).
• Form pressure: Wet concrete exerts lateral pressure on formwork. At 150 lbs/ft³, a 4-foot wall form experiences 600 lbs per square foot of pressure at the bottom — which is why form construction matters so much.
• Floor loading: If pouring a slab on an elevated floor or deck, ensure the structure can handle 150 lbs/ft² per inch of depth. A 4" slab weighs 50 lbs/ft².

How Much Will a Yard of Concrete Cover at 4 Inches Thick?

One cubic yard of concrete covers 81 square feet at 4 inches thick. Here's the coverage chart for all common slab thicknesses:

Use our slab calculator to get exact cubic yard requirements for your specific dimensions.

Weight of Common Concrete Projects

Here's how much concrete weighs for standard residential projects (using wet concrete at 4,050 lbs/yd³):

Concrete Truck Load Limits

Understanding concrete weight is essential for delivery planning. Here's what you need to know about truck capacity:

Key takeaway: Most concrete trucks can legally carry about 9.5 cubic yards due to federal highway weight limits (80,000 lbs GVW). If your project needs more, plan for multiple truckloads. Order 10+ yards and you'll likely get a price break.

Soil Bearing Capacity and Concrete Weight

When placing concrete slabs on soil, the ground must be able to support the weight. Here's how concrete weight relates to soil bearing:

A 4-inch concrete slab weighs 50 lbs/ft² — well within the bearing capacity of most compacted soils. However, you also need to account for live loads (people, vehicles, equipment) on top of the slab. A residential garage floor, for example, needs to support the slab weight (75 lbs/ft² at 6") plus a vehicle (typically 30–50 lbs/ft² distributed).

Concrete Removal Weight Calculations

If you're demolishing an old slab, you need to know how much the broken concrete weighs for dumpster and hauling planning:

• Broken concrete: weighs approximately 2,000–2,400 lbs per cubic yard (air gaps between pieces reduce density by 40%)
• Standard dumpster capacity: A 10-yard dumpster typically has a 4,000–6,000 lb weight limit for concrete, meaning it holds about 2–3 cubic yards of broken concrete
• Cost to dispose: Concrete disposal runs $40–$60 per ton at most recycling centers, or $300–$500 for a dumpster rental

Example: Removing a 10×20 patio (4" thick) = 2.47 cubic yards of concrete = approximately 5,000 lbs of broken material = one loaded 10-yard dumpster.

Concrete Weight Per Square Foot

Sometimes it's more useful to think in square feet rather than cubic yards. Here's the weight per square foot at various thicknesses:

Metric Conversions: Concrete Weight in Kg

For international readers, here are the key concrete weight conversions:

• 1 cubic meter of concrete: 2,400 kg (standard mix) = 5,291 lbs
• 1 cubic yard of concrete: 1,837 kg = 4,050 lbs
• 1 cubic foot of concrete: 68 kg = 150 lbs
• Conversion factor: 1 cubic meter = 1.308 cubic yards

Form Pressure Calculations

When building forms for walls, columns, or deep footings, you need to calculate the lateral pressure of wet concrete to prevent form blowouts. Wet concrete acts like a liquid and exerts hydrostatic pressure:

• Lateral pressure formula: P = w × h (where P = pressure in lbs/ft², w = unit weight of concrete in lbs/ft³, and h = depth in feet)
• At 2 feet deep: 150 × 2 = 300 lbs/ft²
• At 4 feet deep: 150 × 4 = 600 lbs/ft²
• At 8 feet deep: 150 × 8 = 1,200 lbs/ft²

This is why tall wall forms require strong bracing, through-ties, and proper walers. A form blowout from underestimating concrete weight is one of the most expensive mistakes in concrete construction.

Hauling Concrete Bags in Your Truck

If you're buying bags at Home Depot or Lowe's, know your vehicle's payload capacity:

Warning: Overloading your vehicle is dangerous and illegal. A full cubic yard of concrete in bags weighs 3,600 lbs — more than most half-ton pickups can safely carry. Plan for multiple trips or use Home Depot/Lowe's delivery service ($79–$99 for most locations).

Frequently Asked Questions

Why Does Wet Concrete Weigh More Than Dry?

Freshly mixed concrete contains roughly 300–350 lbs of water per cubic yard. During curing, about 50% of this water chemically bonds with cement (hydration), and the rest evaporates. The cured concrete retains most of the original water weight through hydration but loses 400–600 lbs per cubic yard to evaporation, dropping from ~4,050 to ~3,500 lbs/yd³.

How Much Does a Concrete Block Weigh?

A standard 8×8×16 concrete block (CMU) weighs 28–35 lbs depending on density. Lightweight blocks weigh 22–28 lbs, and heavy-weight blocks weigh 35–45 lbs. A filled and grouted concrete block weighs approximately 50–55 lbs.

Does Rebar Add Significant Weight?

Yes. Rebar adds approximately 3–15% to concrete weight depending on spacing and bar size. A #4 rebar at 12" spacing both ways adds about 200 lbs per cubic yard. A #5 at 8" spacing adds about 500 lbs per cubic yard. This matters for structural calculations and truck loading.