Concrete Calculator
Estimate the cubic yards your slab requires, then confirm with a dispatcher before you order.
Concrete Volume Calculator
Enter your slab dimensions to calculate cubic yards, plus a suggested order quantity with a ten percent waste allowance for subgrade variation and form spread.
Common Thicknesses
| Application | Thickness | Typical PSI |
|---|---|---|
| Walkway / patio | 4 in | 3,000 - 3,500 |
| Residential driveway | 4 - 5 in | 4,000 |
| Garage / shop slab | 5 - 6 in | 4,000 - 4,500 |
| Commercial drive aisle | 6 - 8 in | 4,500 |
| Warehouse floor | 6 - 8 in | 4,500 - 5,000 |
| Industrial / heavy load | 8 in + | 5,000 + |
How To Use the Result
The raw figure is a theoretical volume. Real sites are never perfectly flat, forms deflect and subgrade dips absorb concrete, so add five to ten percent. Running short mid-pour creates a cold joint and a permanent weakness; a small surplus costs far less than that.
For footings, columns, steps and irregular shapes, break the work into rectangular sections and add the results, or simply call (602) 601-9426 and let us calculate it with you.
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Talk To Phoenix's Ready Mix Concrete Team
Call (602) 601-9426 for delivered pricing, mix recommendations and scheduling.
739 W Pierce St, Phoenix, AZ 85007 · [email protected]