Density depends on the mix
Normal-weight structural concrete is commonly around 150 lb/ft³ (2,400 kg/m³) when placed, but lightweight mixes can be far lower and heavyweight mixes far higher. Reinforcement adds a little more.
Because density varies, every Concrete Calc tool lets you edit the density value — the defaults are labelled examples, not universal constants.
Weight of common volumes
At the example density of 150 lb/ft³: one cubic yard (27 cu ft) weighs about 4,050 lb (≈ 1,837 kg), and one cubic metre weighs about 2,400 kg.
Combining an example yield of 0.60 cu ft with an example density of 150 lb/ft³ gives 90 lb of placed concrete. These independent examples are not a product water recipe; use the manufacturer's yield, density and water instructions.
Why weight matters
Weight decides what you can safely move: a cubic yard is about two tons, far beyond manual handling. It also matters for trailers, floor loading during construction and demolition skips.
Compute your pour's weight with the calculator — enter volume-driving dimensions and your mix's density to get pounds and kilograms.
Frequently asked questions
How much does a cubic yard of concrete weigh?
At a typical normal-weight density of 150 lb/ft³, about 4,050 lb (roughly 1.8 metric tons). Lightweight and heavyweight mixes differ, so check your mix's density.
Does wet concrete weigh more than cured concrete?
Slightly. Hydration binds water within the concrete; it does not itself remove mass. Evaporation and moisture conditions change weight during curing, so compare densities for the same moisture state.