How much concrete for a 50×50 slab 8 inches thick?
Answer
61.73 cubic yards
2315 bags of 80lb concrete mix3704 bags of 60lb mixOrder ready-mix delivery (~$9,260)Add 10% for waste = 67.90 cy
Need a custom calculation?
Open the full calculator with custom inputs
How We Calculated This
Cubic yards = (L × W × D/12) / 27
(50 × 50 × 8/12) / 27 = 1666.67 / 27 = 61.73 cubic yards
Related Calculations
How much concrete for a 4×4 slab 4 inches thick?0.20 cubic yardsHow much concrete for a 4×4 slab 5 inches thick?0.25 cubic yardsHow much concrete for a 4×4 slab 6 inches thick?0.30 cubic yardsHow much concrete for a 4×4 slab 8 inches thick?0.40 cubic yardsHow much concrete for a 4×6 slab 4 inches thick?0.30 cubic yards
Calculated using verified formulas. Last updated March 2026.