How much gravel do I need?

Enter the area and depth. You get cubic yards, tons (what suppliers sell by) and the number of bags.

Your project

2 to 3 in for paths, 4 to 6 in for driveways
1.3 to 1.5 for most gravel; your supplier knows theirs

What to buy

Gravel to order
2.59 tons
Volume
50 cu ft (1.85 cubic yards)
In bags
100 bags of 0.5 cu ft

At a cubic yard or more, bulk delivery by the ton is far cheaper than bags. Round the order up; suppliers often sell in half or whole tons.

How it’s calculated

Volume is length times width times depth (inches divided by 12), in cubic feet. Divide by 27 for cubic yards.

Tons are cubic yards times the gravel’s weight per yard. Most gravel and crushed stone weighs 1.3 to 1.5 tons per cubic yard; 1.4 is a fair default. Suppliers can tell you the exact figure for theirs.

Paths usually need 2 to 3 inches; driveways 4 to 6 inches over a compacted base.

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