Slab Shape
Select the shape of your concrete slab
Dimensions
Enter the measurements for your slab
Options & Cost
Customize waste factor, bags, and pricing
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Results
Enter dimensions above to see results
Pro Tips
- Always order 10% extra to account for waste and spillage
- Use 4" thickness for patios, 6" for driveways
- Ready-mix is cost-effective for orders over 1 cubic yard
- Rebar spacing of 12" is standard for most slabs
Concrete Buying Guide
Compare ready-mix vs bagged concrete for your project
| Project Size | Cubic Yards | 80lb Bags | Recommended Option |
|---|---|---|---|
| Small (Steps, Posts) | < 0.5 | 1-22 | Bagged |
| Medium (Walkways) | 0.5 - 1 | 22-45 | Either |
| Large (Patio, Driveway) | > 1 | 45+ | Ready-Mix |
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Concrete Slab Calculator