How much concrete for a 4×14 slab 5 inches thick?
Answer
0.86 cubic yards
33 bags of 80lb concrete mix52 bags of 60lb mix~$129 for ready-mix
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How We Calculated This
Cubic yards = (L × W × D/12) / 27
(14 × 4 × 5/12) / 27 = 23.33 / 27 = 0.86 cubic yards
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Calculated using verified formulas. Last updated March 2026.