How much concrete for a 14×25 slab 5 inches thick?
Answer
5.40 cubic yards
203 bags of 80lb concrete mix325 bags of 60lb mixOrder ready-mix delivery (~$810)Add 10% for waste = 5.94 cy
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How We Calculated This
Cubic yards = (L × W × D/12) / 27
(25 × 14 × 5/12) / 27 = 145.83 / 27 = 5.40 cubic yards
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Calculated using verified formulas. Last updated March 2026.