Replace the planning density
Ask the supplier for loose bulk density for the exact aggregate, grading, and moisture condition before ordering.
Continue planning
How the calculation works
We use 105 lb/ft³ adjustable planning assumption.
Formula: length × width × depth × 105 lb/ft³ ÷ 2,000
Worked example
A 30 × 10 ft area at 4 in deep, plus 10% waste, requires about 5.8 tons for ordering.
Measure the placed gravel layer
Measure the finished footprint and average depth, separating areas with different depths or shapes.
Frequently asked questions
Is every gravel 105 lb/ft³?
No. The default is a planning assumption; actual bulk density varies substantially.
Does the estimate account for compaction?
Only through the waste allowance. Confirm delivered-to-compacted yield with the supplier.
Sources and assumptions
Transparent 105 lb/ft³ gravel planning assumption; supplier bulk density controls final tonnage.
Last reviewed: August 14, 2026. Read the methodology and sources.