Project
inches (or cm)
inches (or cm)
feet (or m)
Volume
Cubic yards
0
Bag yields vary by brand. Confirm on the package before buying.
How to use this concrete calculator
- Pick slab, footing, or round column.
- Enter dimensions (thickness in inches when using feet).
- Add a waste percentage if needed.
- Order by cubic yards or bag count.
FAQ
How thick should a patio slab be?
Many residential slabs are 4 inches. Driveways are often 5–6 inches. Follow local code and engineer guidance.
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