Gravel Calculator
Calculate tons and cubic yards of gravel by type — pea gravel, river rock, crushed stone, and more.
How It Works
This calculator converts your project dimensions and gravel type into cubic yards and tons so you can order the right amount of material.
Formula: Cubic Yards = Length (ft) × Width (ft) × Depth (in) / 12 / 27. Then Tons = Cubic Yards × Density (lbs/yd³) / 2,000.
Gravel density varies by type. Lighter materials like pea gravel weigh about 2,600 lbs per cubic yard, while denser road base can weigh 2,900 lbs per cubic yard.
Cost estimates range from $15-$75 per ton depending on gravel type and your location. Basic crushed stone is cheapest while specialty decorative rock costs more.
Frequently Asked Questions
How much gravel do I need for my driveway?
Measure the length and width of your driveway in feet and decide on a depth — typically 4-6 inches for driveways. Multiply length × width × depth (in feet), then divide by 27 to get cubic yards. This calculator handles the conversion and also gives you tonnage based on your gravel type.
What is the best gravel for a driveway?
Crushed stone #57 or road base (also called crusher run) are the most popular choices for driveways. Road base compacts well and provides a solid surface. Pea gravel looks nice but tends to shift under tires and is better suited for walkways and decorative areas.
How deep should gravel be?
Driveways need 4-6 inches, walkways 2-3 inches, and decorative beds 2-3 inches. For a proper driveway, many contractors recommend a 4-inch base layer of road base topped with 2 inches of finishing gravel.
How many tons of gravel are in a cubic yard?
It depends on the gravel type. Most gravel weighs between 2,500 and 2,900 lbs per cubic yard, which is roughly 1.25 to 1.45 tons. Pea gravel is on the lighter end (~1.3 tons/yd³) while road base is heavier (~1.45 tons/yd³).
How much does gravel cost?
Gravel typically costs $15-$75 per ton depending on the type. Basic crushed stone and road base run $15-$30 per ton. Decorative options like pea gravel cost $25-$50 per ton. Premium materials like decomposed granite can run $40-$75 per ton. Delivery fees are usually extra.