Use this free concrete bags calculator to get instant, accurate results for your construction project. Simply enter your measurements above and the calculator will automatically compute the result using industry-standard formulas.
Pro Tip: Always add 10-15% extra material to account for waste, cuts, and job-site conditions. This is standard practice recommended by experienced contractors.
| Thickness | Sq Ft per Yard | 80-lb Bags per 100 sqft |
|---|---|---|
| 3" | 108 | ~14 |
| 4" | 81 | ~19 |
| 5" | 65 | ~24 |
| 6" | 54 | ~28 |
| 8" | 40 | ~38 |