Use this mulch calculator yards tool to estimate bulk mulch, cubic feet, and bags for garden beds and landscape areas.
Calculate cubic yards of mulch from square feet and depth. Estimate yards of mulch, cubic feet, and 2 cu ft bag counts for landscape beds.
The fastest way to calculate cubic yards of mulch is to multiply square feet by depth in inches, then divide by 324. This is the same as length x width x depth in feet divided by 27.
Use consistent units before calculating. When depth is entered in inches, the calculator converts it to feet before dividing by 27.
Practical notes for measuring, converting, and ordering with fewer surprises.
Measure the bed area in square feet, choose your installed depth, then convert square feet to yards using the depth. The mulch calculator square feet to yards method is area times depth in inches divided by 324.
This yards of mulch calculator works for rectangular beds, borders, play areas, and grouped planting zones. For curved beds, split the area into smaller rectangles and add the totals.
Bagged mulch is usually sold in 2 cubic foot bags. Divide total cubic feet by 2 to estimate bags, or divide bags by 13.5 to convert bags of mulch to cubic yards.
This page focuses on the main calculator topic while covering closely related project phrases people use when estimating material quantities.
Short answers for the questions that usually come up before ordering material.
Multiply square feet by depth in inches and divide by 324. Add a small extra amount for uneven beds and settling.
For 2 cubic foot bags, divide bag count by 13.5. For other bag sizes, multiply bags by cubic feet per bag, then divide by 27.
Use 2-3 inches for refreshing existing beds and 3-4 inches for new beds with bare soil.
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