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How to Use Mulch Calculator

Find how much mulch you need for garden beds in cubic yards, cubic meters and 2 or 3 cubic foot bags, from the bed size and depth, with cost.

About this tool

Find how much mulch you need for garden beds, in cubic yards and bags.

How to use Mulch Calculator

  1. Enter the bed length, width and mulch depth.
  2. Add waste and an optional price.
  3. Read the cubic yards and bags needed.

Worked example

A 20 × 10 ft bed covered 3 in deep needs about 1.9 cubic yards, or 26 bags of 2 cubic feet.

How deep should mulch be?

2–3 in suppresses weeds and holds moisture; more can smother plants.

Bulk or bags?

Bulk delivery is usually cheaper above about 2 cubic yards.

Put this guide into practice

  • Mulch Calculator — Find how much mulch you need for garden beds, in cubic yards and bags.

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