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Mulch Calculator

Mulch is sold by the bag and by the cubic yard. Depth matters more than most people expect, so the calculator shows both units for the same bed.

Your result appears here after you press Calculate.

How it is calculated

  • Cubic feet = area × (depth ÷ 12).
  • Cubic yards = cubic feet ÷ 27.
  • Bags = cubic feet ÷ bag size, rounded up.

Assumptions and limits

  • Many garden centers sell 2 cubic foot bags. Confirm the size printed on the bag.
  • Keep mulch away from tree trunks and house siding.

Material estimates are for planning and ordering guidance. Coverage, yield and dimensions vary by product, so check the manufacturer's labeling. Structural work, roofing at height and code compliance should be handled by qualified professionals and confirmed with your local building department.

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