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Mulch Calculator

How many cubic yards or bags of mulch a bed needs at the depth you want.

Bed areasq ftMulch depthin

How it's calculated

One cubic yard spread 1 inch deep covers 324 sq ft. Cubic yards = area × depth (in) ÷ 324. Bags = cubic yards × 27 ÷ bag size in cubic feet, rounded up.

Example

200 sq ft at 3 inches: 200 × 3 ÷ 324 = 1.85 cubic yards, or 25 two-cubic-foot bags.

Recommended mulch depth

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