How many tons of gravel do I need?

Multiply area by depth in feet for cubic yards, then about 1.4 tons per cubic yard. A 200 sq ft area at 4 inches needs roughly 3.5 tons.

How deep should a gravel driveway be?

Plan a total depth of 4–8 inches, often in two layers — a coarse base and a finer top layer.

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How many tons of gravel do I need?: Multiply area by depth in feet for cubic yards, then about 1.4 tons per cubic yard. A 200 sq ft area at 4 inches needs roughly 3.5 tons.
How deep should a gravel driveway be?: Plan a total depth of 4–8 inches, often in two layers — a coarse base and a finer top layer.