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How many bags of gravel you need, and whether bulk delivery would be cheaper.
With these inputs:
| Result | Value |
|---|---|
| Bags needed | 30 bags |
| Bagged total | $195 |
| Bulk delivered (incl. $90 haul) | $108 – $123 |
| Volume | 0.54 yd³ |
| Area | 80 sq ft |
| Depth | 2 in |
| Volume needed | 14.7 ft³ (0.54 yd³) |
| Bag size | 0.5 cu ft |
| Bags required | 30 |
| Bagged cost | $195 |
| Equivalent bulk weight | 0.81 tons |
| Bulk cost estimate | $108 – $123 |
| Pallet loads (56 bags/pallet) | 1 |
Bulk delivery is cheaper here. You would need 30 bags, which is about 1 pallet(s) and far more handling than one truck load.
For small jobs, bagged stone from a home center is simpler than arranging a delivery. This calculator converts your area into a bag count at any bag size, then compares the total bagged price against a bulk load so you can see the crossover point.
Fifty-four bags at 0.5 cubic feet each, since a cubic yard is 27 cubic feet. That is why bulk becomes cheaper so quickly.
A 0.5 cubic foot bag covers about 3 square feet at 2 inches deep, or 1.5 square feet at 4 inches deep.
Almost always above about half a cubic yard, which is roughly 27 bags. Below that, the flat delivery fee outweighs the per-unit saving.
Need the whole roof at once? The free roofing calculator works out roof area, squares, shingle bundles, underlayment, drip edge, ridge cap and installed cost from one set of measurements.