What it calculates
Estimate cubic yards of mulch from area and depth.
Mulch Calculator
Estimate cubic yards of mulch from area and depth.
Planning and estimating aid only. Verify project requirements, manufacturer instructions, adopted codes, permits, and field conditions before performing regulated work.
Landscape estimating
How to Use This Calculator
Use the field units shown below, then compare your result with the worked example. Measure irregular beds in sections and add their areas.
How the calculation works
Area × depth is converted from cubic feet to cubic yards, then the extra percentage is added.
What the result means
Measure bed areas carefully and use finished mulch depth, not bag depth.
Spread a measured depth over a bed
A 100-square-foot bed at 3 inches deep requires 100 × (3 ÷ 12) ÷ 27 = 0.93 cubic yards before allowance. With 10% added, the estimate is about 1.02 cubic yards.
Contractor tip: Measure irregular beds in sections and add their areas. Enter inches in the depth field, then check bag volume or bulk delivery increments before ordering.
Verify the final quantity
The calculation assumes a uniform depth across the entered area. It does not account for existing mulch, settling, delivery packaging or changes in grade. Choose depth for the actual material and planting situation.
Good practice: Compare the calculated quantity with plans, specifications, product packaging and current field conditions before purchasing material.