About Decomposed Granite Calculator
A dedicated, transparent digital calculation resource engineered for landscape planners, builders, and DIY enthusiasts.
Our Purpose
The Decomposed Granite Calculator was created to solve a persistent, practical challenge in landscape planning: bridging the gap between two-dimensional surface measurements and the three-dimensional, weight-based purchase orders required by bulk material suppliers.
Decomposed granite (DG) is rarely quoted in simple square-foot packages. Quarries and landscape supply yards sell by the cubic yard, the US short ton, or retail bags of varying weights. Because bulk density varies widely with gradation, fines, and moisture content, homeowners and contractors frequently encounter ordering errors, leading to costly second deliveries or unused material piles.
Who This Tool Is For
- Homeowners & DIY BuildersPlanning backyard pathways, fire pit patios, drought-tolerant xeriscaping, or garden walkways without overspending.
- Landscapers & ContractorsNeeding quick, reliable verification of material tonnage, loose-to-compacted volume allowances, and delivery budget projections.
- Estimators & DesignersComparing rectangular pathways, circular patio features, and multi-segment layouts within a single calculation session.
- Material SuppliersProviding retail customers with a transparent, verifiable tool to explain why weight and volume figures differ between products.
Why Transparent Calculations Matter
Many generic online calculators bundle hidden safety margins or flat “20% add-ons” directly into the primary calculation, obscuring what is geometric volume versus what is compaction or waste. We believe in clear, mathematical separation:
Scope and Limitations
The outputs generated by this website are planning estimates based on established geometric formulas and published material references.
They do not replace on-site structural engineering, soil testing, manufacturer-mandated installation protocols for stabilized binders, or local quarry weight ticket verifications. Always confirm your final purchasing quantities and delivery requirements with your chosen supplier.