How Much Does Concrete Weigh Per Cubic Foot?
Part of Concrete & Masonry
Quick answer
Normal-weight concrete weighs about 150 lb per cubic foot when freshly poured (145–150 lb cured). That's roughly 4,050 lb — about 2 tons — per cubic yard, since a cubic yard is 27 cubic feet.
Concrete is heavy: the sand, gravel and cement in it pack to about 150 pounds in every cubic foot. That single figure lets you turn any concrete volume into a weight — useful for sizing a footing, loading a trailer, or checking whether a slab can be lifted out later.
The number to remember
- 150 lb per cubic foot (normal-weight concrete).
- 4,050 lb — about 2 tons — per cubic yard (150 × 27).
- Lightweight concrete runs 90–115 lb/ft³; heavyweight mixes go up to 300+.
- Adding rebar barely changes it — steel and concrete weigh about the same per volume.
Concrete weight by volume
| Volume | Approx. weight |
|---|---|
| 1 ft³ | 150 lb |
| 10 ft³ | 1,500 lb |
| 1 yd³ (27 ft³) | 4,050 lb (~2 tons) |
| 1 slab 10×10×0.33 ft (4 in) | ~5,000 lb |
| 5 yd³ | 20,250 lb (~10 tons) |
To weigh a specific pour, get the volume in cubic feet from the concrete calculator and multiply by 150. For cubic yards, multiply by 4,050 (or just call it 2 tons per yard).
FAQs
How much does a yard of concrete weigh?
About 4,050 lb, or roughly 2 tons. A cubic yard is 27 cubic feet and concrete weighs about 150 lb per cubic foot, so 27 × 150 = 4,050 lb.
Does wet concrete weigh more than cured concrete?
Slightly. Freshly mixed concrete is about 150 lb/ft³; as it cures and some mix water evaporates it settles to roughly 145 lb/ft³. The difference is small enough to ignore for most estimates.