Estimate the weight of a concrete slab, footing or volume from its dimensions, using standard concrete density.
This calculator uses a density of 2,400 kg/m³, the standard figure for normal reinforced concrete. Lightweight concrete can be 1,800 kg/m³ or less, while heavy aggregate mixes can exceed 2,500 kg/m³.
Knowing the weight helps you check ground bearing capacity, plan lifting and transport, and confirm that floors or structures can carry the load. Treat the result as a close estimate.
Around 2.4 tonnes (2,400 kg) for standard reinforced concrete. Lightweight mixes weigh less and dense aggregate mixes a little more.
Roughly 1.8 to 2 tonnes (about 3,900 lb), since a cubic yard is 0.765 cubic metres at around 2,400 kg/m³.
It uses 2,400 kg/m³, the standard density for normal-weight reinforced concrete.
Slightly. Wet concrete is a little heavier due to mixing water, and it loses a small amount of weight as it dries and cures.
To check ground or structural load capacity, plan transport and lifting, and ensure a slab or beam is properly supported.
Calculate how much concrete you need for slabs, footings, columns and walls in cubic yards or metres.
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