Mulch for a 12×12 area

1.33 cubic yards (18 bags)

of mulch for 144 sq ft at 3 inches deep: 36 cu ft, or 18 bags of 2 cu ft.

A 12×12 foot area is 144 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 12×12 by depth

DepthCubic yardsCubic feet2 cu ft bags3 cu ft bags
1 in0.441264
2 in0.8924128
3 in1.33361812
4 in1.78482416
6 in2.67723624

How it’s worked out

  1. 12 × 12 = 144 sq ft.
  2. 144 × 3 in ÷ 12 = 36 cu ft.
  3. 36 ÷ 27 = 1.333 cu yd, or 36 ÷ 2 = 18 bags of 2 cu ft (rounded up).

Change the numbers

Mulch needed

1.33 cubic yards

18 bags of 2 cu ft, or 12 bags of 3 cu ft.

Area144 sq ft
Cubic yards1.33 (about $53 bulk)
Cubic feet36
2 cu ft bags18 (about $72)
3 cu ft bags12

Other bed sizes

Questions

How much mulch do I need for a 12×12 area?
1.33 cubic yards at 3 inches deep, or 18 bags of 2 cu ft. At 2 inches it is 0.89 yards (12 bags).
How many bags of mulch for 12×12?
18 bags of 2 cu ft or 12 bags of 3 cu ft at 3 inches deep.
Is bulk or bagged mulch cheaper for 12×12?
Bagged: about $72 for 18 bags. Bulk: about $53 for 1.33 yards, plus delivery. Bulk usually wins above 2 or 3 yards.

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