Patio Concrete Calculator
Free patio concrete calculator. Calculate exactly how many cubic yards of concrete you need for your patio. Includes cost estimates and thickness guide.
Patio Concrete Requirements
| Patio Size | Thickness 4" | 80lb Bags | Concrete Cost | Total Installed Cost |
|---|---|---|---|---|
| 10' × 10' (100 sqft) | 1.23 cu yd | ~30 bags | $200-350 | $800-1,500 |
| 12' × 12' (144 sqft) | 1.78 cu yd | ~44 bags | $280-500 | $1,200-2,200 |
| 15' × 15' (225 sqft) | 2.78 cu yd | ~68 bags | $440-780 | $1,800-3,400 |
| 20' × 20' (400 sqft) | 4.94 cu yd | ~121 bags | $780-1,400 | $3,200-6,000 |
| 20' × 30' (600 sqft) | 7.41 cu yd | ~182 bags | $1,170-2,100 | $4,800-9,000 |
💡 Patio Thickness Guide
- 4 inches — standard for foot traffic, patio furniture
- 5-6 inches — if hot tub, heavy planters, or occasional vehicle
- Add 10% waste factor — always order extra
- Use 3,500-4,000 PSI concrete for outdoor patios