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How much concrete for a 4×14 slab 8 inches thick?

Answer
1.38 cubic yards
52 bags of 80lb concrete mix83 bags of 60lb mix~$207 for ready-mix

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How We Calculated This

Cubic yards = (L × W × D/12) / 27

(14 × 4 × 8/12) / 27 = 37.33 / 27 = 1.38 cubic yards

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Calculated using verified formulas. Last updated March 2026.