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

Answer
0.69 cubic yards
26 bags of 80lb concrete mix42 bags of 60lb mix~$103 for ready-mix

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How We Calculated This

Cubic yards = (L × W × D/12) / 27

(14 × 4 × 4/12) / 27 = 18.67 / 27 = 0.69 cubic yards

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Calculated using verified formulas. Last updated March 2026.