Mulch / Soil / Gravel / Sand Calculator

Estimate bag or bulk quantities for common landscaping materials from area and depth. Choose the unit you want to order in and the answer will use that same unit.

Bulk Material Inputs

Price field
Use the supplier price for one selected unit, such as one cubic metre, one litre, or one cubic foot.
This calculator is best for rectangular beds and one purchase-unit size. For circular areas, compacted road base, or multiple zones, run separate estimates and compare them with supplier guidance.

Start with the footprint, then make depth visible

Mulch, soil, gravel, sand, and similar materials are volume decisions. The same bed at twice the depth requires twice the material, so enter the finished depth you intend to spread or compact rather than relying on a visual guess.

Bulk-material calculation

area × depth = volume

The result can be expressed in the order unit you select and rounded to whole bags or supplier units where those fields are used.

Loose versus compacted material

Loose tipped material and compacted finished material are not always the same volume. Use a supplier’s coverage guidance or an explicit compaction factor where the material requires it; do not treat one depth as a rule for mulch, soil, gravel, and road base alike.

Measure irregular beds in sections

Break an L-shaped bed or curved path into manageable shapes, calculate each footprint, then add them. For an uneven area, compare a minimum and preferred depth so the order range reflects the real ground.

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