Concrete
Concrete Slab
Cubic yards and bag count for a rectangular slab or footing.
OUTPUT
// how it works Volume = L × W × (thickness/12), converted to yd³ (÷27). Bag yields: 80 lb ≈ 0.60 ft³, 60 lb ≈ 0.45 ft³, 40 lb ≈ 0.30 ft³.
Concrete
Cubic yards and bag count for a rectangular slab or footing.
// how it works Volume = L × W × (thickness/12), converted to yd³ (÷27). Bag yields: 80 lb ≈ 0.60 ft³, 60 lb ≈ 0.45 ft³, 40 lb ≈ 0.30 ft³.