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Gravel for a 20×20 Area at 4" Deep

Covering a 20×20 area 4 inches deep takes about 6.7 tons of gravel (4.94 cubic yards). Change the size or depth below — driveways usually run 4–6".

Gravel needed
6.7 tons
Area
400 sq ftat 4" deep
Gravel needed
6.7 tons4.94 cubic yards
Delivered cost (est.)
$300~$45/ton crushed gravel
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