Gravel Tonnage Calculator

Gravel is sold by the ton rather than by volume because weight is more consistent than loose cubic yard measurements which vary depending on how the material settles during transport. This calculator converts your project dimensions into tons using the standard gravel density of approximately 1.4 tons per cubic yard, which is accurate for most common gravel types. Gravel depth depends on the application. Driveways need 4 to 6 inches of total gravel, typically applied in two layers. The base layer uses larger crushed stone like number 57 or number 2 rock at 3 to 4 inches thick. The top layer uses a finer material like crusher run or number 8 stone at 1 to 2 inches thick that compacts into a smooth driving surface. Pathways and walkways need 2 to 3 inches. Drainage trenches and French drains typically use 6 to 12 inches of washed stone. Gravel types vary in size, appearance, and function. Pea gravel is smooth, rounded, and about 3/8 inch in diameter. It looks attractive but shifts underfoot and is not ideal for driveways. Crusher run is angular crushed stone mixed with stone dust that compacts into a firm surface, making it the best choice for driveways and parking areas. River rock is larger decorative stone used for landscaping, drainage, and dry creek beds. Drain rock or washed stone is clean angular stone without fines, used for drainage applications where water needs to flow freely through the material. Delivery trucks vary in capacity. A standard single-axle dump truck carries about 5 to 8 tons. A tandem-axle truck holds 12 to 18 tons. A tri-axle truck can carry 20 to 25 tons. Knowing your total tonnage helps you coordinate the right truck size and number of deliveries. Delivery fees typically run 50 to 150 dollars per load depending on distance, so consolidating into fewer loads saves money. For driveways and high-traffic areas, install landscape fabric between the subgrade and the gravel base to prevent the gravel from sinking into soft soil over time. Without a fabric barrier, mud works its way up into the gravel and the surface degrades within a few years, requiring expensive re-graveling. Pin the fabric at the edges and overlap seams by at least 12 inches.