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Mulch Calculator

Estimate cubic feet, cubic yards and bags of mulch from bed area and depth.

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Free tool

Enter the total garden-bed area.

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Enter the planned depth.

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Optional extra for settling and uneven coverage.

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Use the volume printed on the bag.

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Enter 0 to skip a bulk-cost estimate.

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Formula

Volume (ft³) = area × depth ÷ 12 × (1 + waste%). Cubic yards = cubic feet ÷ 27. Bags = cubic feet ÷ bag size, rounded up.

Volume (ft³) = area × depth ÷ 12 × (1 + waste%). Cubic yards = cubic feet ÷ 27. Bags = cubic feet ÷ bag size, rounded up.

How it works

1

Enter the bed area and intended mulch depth.

2

Add an allowance for settling or uneven spots.

3

Enter the bag size to estimate how many bags are needed.

Important notes

Mulch depth changes with material, climate and the type of bed. Use the product guidance for your project and recheck the bag volume before ordering.