Mulch Calculator — How Much Mulch Do I Need?
The Mulch Calculator tells you exactly how many cubic yards of mulch (or bags) you need for your garden beds or landscaping project. Mulch suppresses weeds, retains moisture, and regulates soil temperature — the standard recommended depth is 2–4 inches. Enter your area dimensions and desired depth for an instant, accurate estimate.
Frequently Asked Questions
2–4 inches is the recommended depth for most applications. 2 inches suppresses weeds moderately; 3–4 inches is more effective. Avoid piling mulch against tree trunks (volcano mulching) as this promotes rot.