Gravel Calculator
Enter the area and depth to see how much gravel or crushed stone to order, in cubic yards and tons.
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How to calculate gravel
Cubic yards = length x width (ft) x depth (in) / 12 / 27. Quarries usually sell by the ton: most gravel and crushed stone weighs about 1.4 tons per cubic yard.
Add about 10% for compaction. Driveways typically need 4 to 6 inches of base gravel plus 2 inches of top layer.
Questions
How many tons of gravel do I need for a driveway?
A 50 x 10 ft driveway at 4 inches deep needs about 6.2 cubic yards, or roughly 9.5 tons with 10% extra.
How much does a cubic yard of gravel weigh?
About 1.4 tons (2,800 lb) for typical crushed stone, though it varies by stone type and moisture.
How deep should gravel be for a walkway?
About 2 to 3 inches for a walkway, over a compacted base if the soil is soft.