Mulch Calculator
Free mulch calculator to estimate cubic yards, number of bags needed, and total costs for garden beds, tree rings, and landscaping.
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Calculate Mulch for Your Landscaping Project
Planning to mulch your garden beds or landscape? Our mulch calculator helps you determine exactly how much mulch you need in cubic yards or bags. Get accurate estimates and cost projections to avoid over-buying or running short.
Understanding Mulch Measurements
Mulch is measured in cubic yards (bulk) or cubic feet (bags). The recommended depth varies: 2-3 inches for weed suppression, 3-4 inches for moisture retention. One cubic yard covers about 162 square feet at 2 inches deep, or 108 square feet at 3 inches deep.
Mulch Volume Formula
Volume (cu ft) = Length × Width × (Depth ÷ 12)How to Calculate Mulch Needed
Common Mulching Projects
Garden Beds
Flower beds and shrub areas benefit from 2-3 inches of organic mulch.
Tree Rings
Create mulch rings around trees—keep mulch 2-3 inches away from the trunk.
Pathways
Use 3-4 inches of mulch for walking paths—consider rubber mulch for durability.
Frequently Asked Questions
2-3 inches is ideal for most applications. Too thin won't suppress weeds; too thick can suffocate plants and trap moisture against stems.