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Concrete Calculator

Enter your slab's length, width, and thickness to see cubic yards needed and how many 60lb or 80lb bags to buy — updated as you type.

Slab Dimensions

Currency

Length (ft)

Width (ft)

Thickness (in)

Waste / Overage (%)

Price per Cubic Yard (optional)

Results

Concrete Needed0.00 yd³

60lb Bags0

80lb Bags0

Based on 0.0 cubic feet including waste. Bag counts assume ready-mix bags yield about 0.45 ft³ (60lb) or 0.6 ft³ (80lb) of mixed concrete -- verify against the bag you're actually using.