Mulch Calculator
Find how much mulch your garden beds need — in cubic yards and in standard 2 cubic foot bags.
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How it works
Mulch is sold in cubic yards (bulk) or 2 cubic foot bags. Multiply bed length × width × depth in feet for cubic feet, divide by 27 for yards, or by 2 for the number of bags.
Formula
Cubic yards = (L × W × Depth in ft) ÷ 27 · Bags = cubic feet ÷ 2
Frequently asked questions
How many bags of mulch are in a yard?
About 13.5 bags, since a cubic yard is 27 cubic feet and each standard bag holds 2 cubic feet.
How deep should mulch be?
A 2–3 inch layer is best. Deeper than 3–4 inches can suffocate roots and waste material.
How much does a yard of mulch cover?
One cubic yard covers about 100 square feet at 3 inches deep, or 160 square feet at 2 inches.