How much concrete for a 14×14 slab 5 inches thick?
Answer
3.02 cubic yards
114 bags of 80lb concrete mix182 bags of 60lb mixOrder ready-mix delivery (~$453)Add 10% for waste = 3.32 cy
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How We Calculated This
Cubic yards = (L × W × D/12) / 27
(14 × 14 × 5/12) / 27 = 81.67 / 27 = 3.02 cubic yards
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Calculated using verified formulas. Last updated March 2026.