One cubic yard of mulch equals 27 cubic feet. The number of mulch bags in a yard depends on the size of the bags:

• For standard 2 cubic feet bags, there are 13.5 bags in a cubic yard.
• For 1.5 cubic feet bags, there are 18 bags in a cubic yard.
• For 3 cubic feet bags, there are 9 bags in a cubic yard.
• For 1 cubic foot bags, there are 27 bags in a cubic yard

Most commonly, mulch bags are 2 cubic feet, so you typically need about 13.5 bags to equal one cubic yard of mulch.