Mulch Calculator
Find out exactly how much mulch you need for your garden or landscaping project. Compare bag vs bulk pricing instantly.
Area Dimensions
Purchase Method
Results
Cubic Yards
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Bags Needed
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Est. Cost
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How to use the mulch calculator.
- Measure the length and width of the area you want to mulch in feet.
- Select the desired mulch depth — 2 inches is standard for most flower beds.
- Choose between buying bags or bulk mulch delivery.
- If buying bags, select the bag size (standard is 2 cubic feet).
- Click "Calculate Mulch Needed" to see cubic yards, bags, and estimated cost.
Frequently asked questions.
How deep should mulch be?
A 2–3 inch layer is ideal for most flower beds and garden areas. This depth provides good weed suppression while allowing water and air to reach plant roots. Avoid going deeper than 4 inches, which can suffocate roots.
Is bagged or bulk mulch cheaper?
Bulk mulch is significantly cheaper — typically $25–$50 per cubic yard delivered, compared to $4–$7 per 2 cu ft bag. For small projects (under 10 bags), bags may be more convenient. For larger areas, bulk delivery saves 30–50%.
How often should I replace mulch?
Organic mulches like wood chips and bark should be topped up annually, as they decompose and enrich the soil. A fresh 1–2 inch layer each year maintains appearance and weed suppression.
How much does a yard of mulch cover?
One cubic yard of mulch covers approximately 162 square feet at 2 inches deep, or 108 square feet at 3 inches deep. This is roughly equivalent to a 13×12 ft garden bed at 2 inches depth.