How Much Does a Yard of Concrete Weigh? Complete Guide (2026)
Quick Answer: One cubic yard of concrete weighs approximately 4,000 pounds (2 tons). The exact weight varies from 3,700 to 4,200 pounds depending on the mix design, aggregate type, and moisture content. Standard concrete is about 150 pounds per cubic foot.
The Basic Math
A cubic yard is 27 cubic feet (3 ft × 3 ft × 3 ft).
Standard concrete: 150 lbs per cubic foot
150 × 27 = 4,050 pounds per cubic yard
That’s just over 2 tons – about the weight of a small car!
Why the Weight Varies
Not all concrete weighs the same. Several factors affect the final weight:
Aggregate Type
– Normal weight concrete (gravel/limestone aggregate): 140-150 lbs/cubic foot → ~3,800-4,050 lbs/yard
– Lightweight concrete (expanded shale/clay): 90-120 lbs/cubic foot → ~2,430-3,240 lbs/yard
– Heavyweight concrete (barite/magnetite aggregate): 180-200+ lbs/cubic foot → ~4,860-5,400+ lbs/yard
Mix Design
– Higher cement content = slightly heavier
– More water = heavier when wet, lighter when cured
– Air-entrained concrete (with tiny air bubbles for freeze resistance) is slightly lighter
Moisture Content
– Freshly mixed (wet) concrete is heaviest
– Fully cured concrete loses water weight over 28 days
– The difference can be 100-200 pounds per yard
Concrete Weight Reference Table
| Concrete Type | Lbs per Cubic Foot | Lbs per Cubic Yard | Tons per Yard |
|————–|——————-|——————-|—————|
| Lightweight | 90-120 | 2,430-3,240 | 1.2-1.6 |
| Normal weight | 140-150 | 3,780-4,050 | 1.9-2.0 |
| Heavyweight | 180-200 | 4,860-5,400 | 2.4-2.7 |
Practical Applications: Why This Matters
Ordering Concrete
Concrete is sold by the cubic yard. Knowing the weight helps you:
– Ensure your truck can handle it: A standard mixer truck carries 8-10 cubic yards (16-20 tons of concrete plus the truck weight)
– Plan your project: A 10×10 foot slab, 4 inches thick = 1.24 cubic yards ≈ 5,000 lbs
Calculating How Much You Need
Formula: Length (ft) × Width (ft) × Thickness (ft) ÷ 27 = Cubic yards
Example – a 20×15 ft driveway, 4 inches thick:
– 20 × 15 × 0.33 = 99 cubic feet
– 99 ÷ 27 = 3.67 cubic yards
– Order 4 yards (always add 5-10% extra)
Structural Considerations
– Floors and foundations must be engineered to support concrete weight
– A 4-inch slab weighs about 50 lbs per square foot
– Always consult a structural engineer for load-bearing projects
How Much Does a Bag of Concrete Weigh?
For small projects using bagged concrete:
– 80 lb bag yields ~0.6 cubic feet → you need 45 bags per cubic yard
– 60 lb bag yields ~0.45 cubic feet → you need 60 bags per cubic yard
– 40 lb bag yields ~0.3 cubic feet → you need 90 bags per cubic yard
Frequently Asked Questions
How many wheelbarrows in a yard of concrete? A standard wheelbarrow holds about 2 cubic feet. You’ll need roughly 13-14 wheelbarrow loads per cubic yard. That’s a lot of trips!
Can I mix a yard of concrete by hand? Technically yes, but it’s about 45 bags of 80-lb mix – roughly 3,600 lbs of dry material plus water. For anything over half a yard, order ready-mix.
Does reinforced concrete weigh more? Slightly – rebar adds about 1-2% to the total weight, which is negligible for most calculations.
How long does a yard of concrete take to set? Initial set in 4-8 hours, but full cure takes 28 days. You can usually walk on it after 24-48 hours.
Conclusion
A cubic yard of standard concrete weighs about 4,000 pounds (2 tons). Remember this when planning your project – both for ordering the right amount and ensuring your site can handle the weight. When in doubt, consult a professional!