How to Calculate Gravel by the Ton
Gravel is sold by the ton or cubic yard. To convert between them, you need the density of your gravel type. Pea gravel weighs about 1.4 tons per cubic yard, while lighter materials like lava rock weigh closer to 1.1 tons per cubic yard.
Formula: Length (ft) × Width (ft) × Depth (ft) ÷ 27 = Cubic Yards. Then multiply by the density (tons per cubic yard) to get tons.
Recommended Gravel Depths
- Driveways: 4-6 inches (base) + 2-3 inches (top layer)
- Walkways: 2-3 inches
- French drains: 6-12 inches
- Landscaping ground cover: 2-4 inches
- Patio base: 4-6 inches compacted
How Many Tons in a Dump Truck?
A standard dump truck carries 10-14 tons of gravel. A tandem axle dump truck holds about 14-18 tons. For projects under 5 tons, many suppliers offer pickup or small delivery options.
Choosing the Right Gravel
Pea gravel(3/8") is ideal for walkways and drainage. Crushed stone (#57 stone) compacts well for driveways and bases. River rock(1-3") works for decorative landscaping but doesn't compact. Decomposed granite creates a natural-looking, semi-firm surface for paths.