How much concrete for a 10×25 slab 5 inches thick?
Answer
3.86 cubic yards
145 bags of 80lb concrete mix232 bags of 60lb mixOrder ready-mix delivery (~$579)Add 10% for waste = 4.25 cy
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How We Calculated This
Cubic yards = (L × W × D/12) / 27
(25 × 10 × 5/12) / 27 = 104.17 / 27 = 3.86 cubic yards
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Calculated using verified formulas. Last updated March 2026.