Gravel Driveway Calculator
A gravel driveway calculator finds how much gravel your driveway needs by multiplying its length by width by depth, then converting to cubic yards and tons. Driveways need more depth than paths, usually 4 to 6 inches, often in layers. Enter your driveway dimensions below.
gravel density ~1.4 tons per cubic yard; suggest layered depth.
- Tons
- 0
- Estimated cost
- $0.00
Enter your dimensions to see the result.
Estimate only. Material yields and prices vary by supplier and region; confirm before ordering.
How Much Gravel for a Driveway?
To calculate driveway gravel, multiply length by width by depth in feet, divide by 27 for cubic yards, and multiply by 1.4 for tons. A 40 by 12 foot driveway at 5 inches deep is 200 cubic feet, about 7.4 cubic yards, or roughly 10.4 tons. Because driveways are often layered, calculate the base and top layers separately and add them, which the calculator makes easy.
How Many Layers Does a Gravel Driveway Need?
A durable gravel driveway is usually built in two or three layers: a coarse base stone for structure, a middle layer, and a finer top stone for the surface. Each layer is a few inches, totaling 4 to 6 inches or more. Calculating per layer gives a more accurate order than treating the driveway as one depth, since the layers use different stone grades.
Related calculators
Frequently asked questions
- How much gravel for a 40 foot driveway?
- A 40 by 12 foot driveway at 5 inches deep needs about 7.4 cubic yards, or roughly 10.4 tons. Layered driveways should be calculated by layer.
- How deep should a gravel driveway be?
- A gravel driveway is usually 4 to 6 inches deep, built in layers with a coarse base and a finer top. Deeper gravel supports vehicle loads better.