100 sq ft of mulch 2 in deep takes 16.7 cu ft (0.62 cu yd) — 9 bags of 2 cu ft, 12 bags of 1.5 cu ft or 6 bags of 3 cu ft.
| Bag | Bags | Est. cost |
|---|---|---|
| 1.5 cu ft | 12 | $59.76 |
| 2 cu ft | 9 | $32.85 |
| 3 cu ft | 6 | ≈ $32.88 |
Bag and bulk prices from the Mulch Pros (GA) list of Oct 22, 2026 and retail snapshots. Tap any price to use your store's.
| Depth | Cu yd | 2 cu ft bags | 1.5 cu ft bags | Bag cost | Bulk delivered |
|---|---|---|---|---|---|
| 2 in | 0.62 | 9 | 12 | $32.85 | $95.96 |
| 3 in | 0.93 | 13 | 17 | $47.45 | $106 |
| 4 in | 1.23 | 17 | 23 | $62.05 | $117 |
100 sq ft × 2 in ÷ 12 = 16.7 cu ft. Divide by the bag size — 16.7 ÷ 2 = 8.33, rounded up to 9 bags — or by 27 for 0.62 cubic yards.
With bags at $3.65 and bulk at $33.95 a yard plus $75 delivery, bulk pays off from about 4.9 cu yd — about 793 sq ft at 2 in. At 0.62 cu yd you are below it, so bags are cheaper and easier to carry to the beds.
The full method, material data and tips are on the main mulch calculator page.