Landscape material estimator
Landscape Rock Calculator
Estimate landscape rock volume, bulk weight, retail bags and material cost from bed dimensions or a known area.
Formula reviewed against common landscape material coverage guidanceUpdated
Rock bed inputs
Measure the covered area
Rock to order--
Enter dimensions to estimate material.
Project profile
Material coverage check
Project area2 in finished depth
The drawing is a planning aid and is not a site survey. Measure irregular edges separately and confirm the finished depth with the supplier or installer.
Transparent estimate
Calculation breakdown
- 1Project area
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- 2Required material
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- 3Ordering allowance
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Results are planning estimates. Product coverage, settlement, moisture, site preparation and supplier rounding can change the quantity purchased.
Reference values
Rock depth, density and coverage assumptions
Depth
Landscape rock is usually installed as a shallow finished layer. Use the depth recommended for the rock size and site.
Weight
Bulk rock may be sold by cubic yard or ton. The density setting converts volume to an approximate weight and varies by stone.
Bags
Bag coverage is based on the volume printed on the package; actual coverage changes with stone size and placement.
Landscape rock calculator FAQ
How much landscape rock do I need?
Multiply the covered area by the finished depth, convert the volume to cubic yards and add the selected allowance. Measure irregular sections separately.
How many tons of rock do I need?
Multiply the ordered cubic yards by the density entered for the stone. Density is an estimate, so confirm the supplier rate before ordering.
How deep should landscape rock be?
Depth depends on stone size, the landscape design and local conditions. Use the smallest practical finished depth that provides coverage and confirm it with the supplier or installer.
Is landscape rock sold by the yard or ton?
Both are common. This calculator shows cubic yards and converts the volume to approximate tons using your density setting.
Does this include landscape fabric or labor?
No. The estimate covers rock quantity and entered material prices. Fabric, edging, delivery, labor and taxes are separate.