Calculate how much gravel, crushed stone or aggregate base you need for a driveway, path, or drainage layer.
A typical 4-inch deep driveway needs about 0.2 tons of gravel per 10 sq ft — use this calculator with your exact dimensions for a precise figure.
Gravel is naturally rounded from erosion, while crushed stone is mechanically broken and has angular edges that lock together better for a compact base.
3–4 inches is typical for pedestrian paths and light driveways; 6 inches or more is recommended under structures or for heavy vehicle traffic.