Mulch Calculator

Calculate how much mulch you need for your garden.

Formula & Methodology

Volume = area (sq ft) × depth (ft); cubic yards = volume / 27.

Worked Example

A 200 sq ft bed covered 3 inches deep needs about 1.85 cubic yards of mulch.

Frequently Asked Questions

How deep should mulch be?

A 2–3 inch layer is typical for weed suppression and moisture retention without smothering roots.

How many bags is that?

A standard 2 cu ft bag covers about 8 sq ft at 3 inches; divide the cubic feet by the bag size.

Does it work for soil and gravel too?

Yes. The same volume formula applies to any bulk material sold by the cubic yard.

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