Mulch for a 4×40 area
1.48 cubic yards (20 bags)
of mulch for 160 sq ft at 3 inches deep: 40 cu ft, or 20 bags of 2 cu ft.
A 4×40 foot area is 160 square feet. Most garden beds need 2 to 3 inches of mulch; a fresh bed or a weedy one benefits from 3 to 4 inches.
Mulch for 4×40 by depth
| Depth | Cubic yards | Cubic feet | 2 cu ft bags | 3 cu ft bags |
|---|---|---|---|---|
| 1 in | 0.49 | 13.3 | 7 | 5 |
| 2 in | 0.99 | 26.7 | 14 | 9 |
| 3 in | 1.48 | 40 | 20 | 14 |
| 4 in | 1.98 | 53.3 | 27 | 18 |
| 6 in | 2.96 | 80 | 40 | 27 |
How it’s worked out
- 40 × 4 = 160 sq ft.
- 160 × 3 in ÷ 12 = 40 cu ft.
- 40 ÷ 27 = 1.481 cu yd, or 40 ÷ 2 = 20 bags of 2 cu ft (rounded up).
Change the numbers
Other bed sizes
- 3×40 area
- 4×30 area
- 4×50 area
- 5×40 area
- 4×25 area
- 2×40 area
- 4×20 area
- 6×40 area
- 4×15 area
- 4×12 area
- 4×10 area
- 4×8 area
Questions
- How much mulch do I need for a 4×40 area?
- 1.48 cubic yards at 3 inches deep, or 20 bags of 2 cu ft. At 2 inches it is 0.99 yards (14 bags).
- How many bags of mulch for 4×40?
- 20 bags of 2 cu ft or 14 bags of 3 cu ft at 3 inches deep.
- Is bulk or bagged mulch cheaper for 4×40?
- Bagged: about $80 for 20 bags. Bulk: about $59 for 1.48 yards, plus delivery. Bulk usually wins above 2 or 3 yards.