How Deep Should Gravel Be?
Gravel should be about 2 inches deep for decorative ground cover and walking paths, and 4 to 6 inches for a driveway, ideally built in two layers: a coarse crushed-stone base topped with a finer driving surface. Deeper, layered gravel resists rutting and drains better.
Paths and decorative areas
A 2 inch layer of gravel covers the soil and gives a stable walking surface. For larger decorative stone, go to 3 inches so the ground does not show through.
Edging helps keep gravel in place and reduces how often you have to top it up.
Driveways need layers
A driveway should total 4 to 6 inches. Lay a 3 to 4 inch base of coarse crushed stone, compact it, then add a 1 to 2 inch top layer of finer gravel for a smooth surface.
Build and compact each layer separately. The gravel calculator gives the yards and tons for each layer when you enter its depth.
FAQ
How deep should gravel be for a driveway?
4 to 6 inches total, in two layers: a coarse crushed-stone base of 3 to 4 inches topped with a finer 1 to 2 inch surface, each compacted.
How deep should gravel be for a path?
About 2 inches for small stone, or 3 inches for larger decorative rock so the soil does not show through.