Home / Home and Garden / Landscaping Materials
Landscaping material calculators
Yard projects fail in the driveway, not on paper. Too little material means a second delivery fee. Too much means a pile you pay to haul away. These tools work in the units suppliers sell: cubic yards, bags, rolls and pallets.
How deep should each material go?
Depth decides the order size more than area does, and every material has a working range that landscapers actually use:
| Material and job | Typical depth | Why |
|---|---|---|
| Topsoil under a new lawn | 4 to 6 in | Grass roots live in this layer. Thinner, and the lawn dries out first every summer. |
| Topsoil top up for garden beds | 2 to 3 in per season | Beds consume organic matter yearly. A shallow refresh beats one deep dump. |
| Fill dirt for grading | As needed, compacted in 6 to 8 in layers | Deep loose fill settles unevenly. Layers compacted as you go stay put. |
| Sand bedding under pavers | 1 in | The standard bedding course over a compacted gravel base. |
| Gravel for a driveway | 4 to 6 in total | Usually a coarse base course plus a finer top course, not one deep layer. |
| Mulch around beds and trees | 2 to 3 in | Enough to hold moisture and block weeds. Deeper can suffocate roots. |
The shared math
Most loose materials on this page run through one volume engine: area times depth gives cubic feet, divided by 27 gives cubic yards, and a settle factor accounts for material compacting after delivery. Each calculator page shows its own constants, because a bag of topsoil and a pallet of sod are sold in different units and vary by supplier.
Coverage works the same way in reverse. One cubic yard at 3 inches deep covers 108 square feet. If a supplier quotes you a price per yard, that single fact lets you sanity check any quote against your own measurements before money moves.
Landscaping materials FAQs
How much area does one cubic yard cover?
It depends on depth. One cubic yard is 27 cubic feet, so at 3 inches deep it covers 108 square feet, at 4 inches it covers 81, at 6 inches 54, and at 12 inches 27. Depth is the lever: halving the depth doubles the coverage.
What does a cubic yard actually look like?
A cube 3 feet on every side. Spread out, it is roughly the load that fills a standard pickup bed when heaped. In bags it is 27 bags at 1 cubic foot each. Most people picture far less than a yard when they order their first one, which is why deliveries surprise them.
What should I check before a bulk delivery arrives?
Three things. Access: a loaded dump truck needs a clear, firm path and cannot cross wet lawns without rutting them. Placement: pick a spot on pavement or a tarp, close to the work, because every wheelbarrow trip costs minutes. Timing: order for the morning of the day you will spread, loose soil and sod both suffer sitting in a pile or on a pallet.