Mulch Volume Formula:
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The Bulk Mulch Calculator helps determine how many cubic yards of mulch you need for your landscaping project based on the area to be covered and the desired depth of mulch.
The calculator uses the mulch volume formula:
Where:
Explanation: The formula first converts depth from inches to feet, calculates the volume in cubic feet, then converts to cubic yards.
Details: Proper mulch calculation ensures you purchase the right amount - too little leaves bare spots, too much wastes money and can harm plants.
Tips: Measure your garden area in square feet (length × width). Typical mulch depth is 2-4 inches. For large areas, divide into sections and calculate separately.
Q1: What's the typical depth for mulch?
A: 2-4 inches is standard. Use 2 inches for fine mulch, 3-4 inches for coarse mulch like bark chunks.
Q2: How do I measure irregularly shaped areas?
A: Break the area into rectangles, triangles, or circles, calculate each separately, then sum the results.
Q3: Should I account for existing plants?
A: Yes, subtract areas occupied by large plants where you won't apply mulch.
Q4: How many bags equal a cubic yard?
A: Typically 13-14 bags (2 cubic feet each) make 1 cubic yard, but check bag sizes.
Q5: Does mulch settle over time?
A: Yes, fresh mulch can settle 20-30% within a few weeks, so consider applying slightly more initially.