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Construction Calculators

Concrete Weight Calculator

Calculate the total weight of a concrete slab from its volume and standard concrete density.

ft
ft
in
lb/cu ft
Standard normal-weight concrete is about 150 lb per cubic foot.
Cubic feet —
Weight —
Weight —
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About the Concrete Weight Calculator

This calculator finds the total weight of a poured concrete slab or pad, which is useful for checking load limits on trailers, structural framing below the slab, or crane/lift capacity for precast pieces.

Formula: Cubic Feet = Length × Width × (Thickness ÷ 12); Weight = Cubic Feet × Density; Tons = Weight ÷ 2000

Standard normal-weight concrete is about 150 lb per cubic foot; lightweight concrete mixes can run 100-115 lb/cu ft. Add the weight of any embedded rebar or mesh separately for a fully accurate total.

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