Mulch Calculator › 30×30 bed

Mulch for a 30×30 Bed at 4 inches

A 30×30 bed (900 sq ft) at 4 inches needs about 11.11 cubic yards of mulch — roughly $422. See the full breakdown.

You need
11.11 cu yd
Estimated material cost $422
Area
900 sq ft
Volume
300.0 cu ft
2-cu-ft bags
150
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Adjust for your project

You need
11.11 cu yd
Estimated material cost $422
Area
900 sq ft
Volume
300.0 cu ft
2-cu-ft bags
150

Material shopping list

  • Order about 11.11 cubic yards of mulch.
  • Budget about $422 before delivery, taxes, and labor.
  • Add 5–10% waste for uneven subgrade, cuts, settling, or spillage.

Formula & assumptions

Area = length x width. Volume = area x depth / 12. Cubic yards = cubic feet / 27. Cost = quantity x local unit price.

  • Default depth: 3 inches
  • Default price: $38 per cuyd
  • 2-cu-ft bags yield: 2.0 cu ft each

These assumptions make the estimate easy for search engines and AI answer tools to verify. Replace the default price with your supplier quote for a local estimate.

Based on $38 per cuyd national average. Enter your local price for an exact quote. Estimate only.