Aggregate / Gravel Cubic Yards
Cubic yards and tons from area, depth, and material density.
Example
You enter
- Area (ft²) 1000
- Depth (in) 4
- Material crushed_stone
You get
- Cubic yards 12.35
- Tons 16.67
- Material density (pcf) 100
No published worked example is on file for this calculation. It is checked against a hand-worked derivation of its method and an independent reference test.
Details, formula, and sources
Formula or tableVolume = L × W × D (cubic yards via /27); tonnage = volume × density. Density per material (3/4″ gravel ~ 2700 lb/yd³, sand ~ 2700, river rock ~ 2900).
Source and editionUSGS / NSSGA aggregate density references by name.
Free accessUSGS free at usgs.gov.
What governsEstimate. AHJ and licensed professional govern.
API field namesarea_ft2, depth_in, material, cubic_yards, tons, pcf
- Density table engineering-practice values per materialUSGS / NSSGA