CALCWOVEN • DRIVEWAY MATERIALS
Gravel Driveway Calculator
Estimate gravel for a driveway in tons, cubic yards and truckloads. Enter the driveway size, choose a layer setup, and adjust depth, stone type and optional cost.
CALCWOVEN GRAVEL DRIVEWAY CALCULATOR
Gravel Driveway Calculator
Estimate the gravel for a driveway in tons, cubic yards and truckloads. Enter the length and width, choose a layer setup (sub-base, base and surface), and adjust each layer’s depth and stone. Results update as you type.
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Driveway size
Layers
Depths are compacted depths. Setups are industry starting points for typical soil and traffic, not building code. Set a layer to 0 to leave it out. Use your supplier’s density for each stone when you have it.
Cost (optional)
You need
- Total depth—
- Sub-base—
- Base—
- Surface—
- Cubic yards (total)—
- Cubic feet—
- Cubic meters—
- US tons—
- Metric tonnes—
- Tandem loads (est., 14-ton payload)—
- Estimated cost—
Truckloads use 14 US tons as an example payload for a tandem dump truck. Confirm the load size with your supplier.
Results update as you type.
Planning a paved driveway instead? Use the Asphalt Driveway Calculator to estimate hot-mix asphalt in tons, volume and cost from driveway size, compacted thickness, density and waste allowance. If you are deciding on the pavement section first, read how thick should asphalt be for a driveway for the differences between 2, 3 and 4 inch asphalt systems. Keep this calculator for layered gravel driveways.
HOW IT WORKS
How the gravel driveway calculator works
A gravel driveway is usually built in layers, not as one thick pour of stone. The calculator works out each layer separately, adds your extra allowance, and converts the volume to tons with a planning density for each type of stone. The total is your order quantity in tons and cubic yards.
| Layer | Typical stone | Typical compacted depth | What it does |
|---|---|---|---|
| Sub-base | Crushed stone #3 or #57 | About 4 to 6 in (6 in or more on soft soil) | Structural support and drainage |
| Base | Crusher run or #411 | About 3 to 4 in | Locks together under load and gives a firm, even surface |
| Surface | Crushed stone or pea gravel | About 2 to 3 in | The wear layer you drive on, topped up over time |
These ranges come from contractor and supplier guidance, not from building code or an extension service. Your soil, drainage, climate and the vehicles that will use the driveway decide what is right for your site.
DEPTH SETUPS
What the three setups mean
| Setup | Layers (compacted) | Total | Basis |
|---|---|---|---|
| Light use (cars) | 4 in base + 2 in surface | 6 in | Industry guides describe a 4-inch compacted base with a 2-inch surface cap as the most common light residential system over firm, well-drained soil. |
| Standard residential | 4 in sub-base + 3 in base + 2 in surface | 9 in | Falls within the 8 to 12 inch total that Bovee’s recommends for a residential driveway carrying passenger vehicles. |
| Heavy loads or soft soil | 6 in sub-base + 4 in base + 2 in surface | 12 in | Top of the same range. Bovee’s puts clay and weak soils at 10 to 12 inches, with a geotextile fabric. |
Excavation depth is the total compacted thickness plus roughly 1 inch for the geotextile fabric. Stone goes down in lifts no thicker than 4 to 6 inches, compacted one at a time. Shape the driveway with a slight crown, about 1 to 2 inches higher in the middle than at the edges, so water runs off to the sides.
QUICK ANSWERS
Common questions
How deep should a gravel driveway be?
Industry guides commonly suggest about 6 inches in total for a light-use driveway and 8 to 12 inches for a standard residential driveway, built in layers. Soft soil, clay, heavy vehicles or freeze-thaw can call for more.
How many tons of gravel do I need for a 50 × 12 ft driveway?
With the standard 9-inch setup and 10% extra, about 26 tons (18.3 cubic yards): roughly 11.4 tons of sub-base, 9.2 tons of base and 5.7 tons of surface. The light-use 6-inch setup is about 18 tons.
Do I need geotextile fabric?
Contractor guides recommend a geotextile separation fabric between the soil and the stone, especially on clay or soft soil, so the stone does not sink into the ground. Fabric is not included in the stone totals above.
Why add extra for compaction?
Compacted stone takes up less space than loose stone, and the grade is rarely perfect. The extra allowance (10% by default) helps cover that and spillage. It is an ordering allowance, not a compaction ratio.
What weights does the calculator use?
The same planning weights as our gravel weight guide: crushed stone 1.40 tons per cubic yard, crusher run 1.50 and pea gravel 1.35. Use your supplier’s figure when ordering by the ton.
How many truckloads is that?
The calculator divides the total tons by 14, an example payload for a tandem dump truck. Real trucks vary, and heavy stone often reaches the weight limit before the bed is full. See how many cubic yards in a dump truck.
MORE TOOLS
Planning the rest of the driveway?
Use the Gravel Calculator for a single layer of gravel by type, or read how much gravel do I need for the formula and depth guide. For weights by stone, see how much does a yard of gravel weigh. Ordering several tons by delivery? See how many cubic yards in a dump truck.
Depths and layers are industry starting points, not building code, and weights are planning estimates. Confirm the design, stone and quantities with your local supplier or a driveway contractor. Sources: Bovee’s: Gravel Driveway Base Requirements, MaterialCalcHub: Gravel Driveway Depth and GravelTools: Driveway Gravel Calculator.