landscaping · 3 min read
How to Estimate Gravel for a Driveway
4 inches minimum for cars, 6 inches for trucks, over a compacted road-base subgrade.
Depth by use
Residential cars: 4 inches gravel over 4 inches compacted road base.
Trucks and RVs: 6 inches gravel over 6–8 inches road base.
Slopes over 10%: use angular stone that locks in place.
Cubic yards
Length × width × depth (ft) ÷ 27 = cubic yards.
Add 10% for waste, compaction, and edge losses.
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These results are estimates only. Confirm quantities, compaction, waste, and delivery requirements with your supplier or project professional before ordering materials.