Gravel Calculator for Driveway

How much gravel for a driveway?

A standard 60 × 12 ft single-car driveway needs about 9 cubic yards (12.5 tons) per 4-inch layer: and a properly built new driveway is three layers, roughly 37 tons total. Topping up an existing drive is one 2–3" lift, a third of that. This calculator converts your dimensions to yards and tons for the stone you're actually buying, because suppliers sell by the ton and density varies by 15% between stones.

The three-layer build that doesn't rut

Driveways fail from the bottom. The lasting recipe: 4" of #3 large stone (golf-ball to fist size) as the base, compacted; 4" of #57 (quarter-size, drains well) in the middle; 2–3" of crusher run (stone with fines that locks tight) on top. Skipping straight to pretty top stone on dirt buys you potholes by spring. Run this calculator once per layer with each stone's density.

Tons vs. yards: ordering without the awkward call

Volume is yards; trucks and invoices are tons. The conversion is the stone's density: crushed stone ~1.4 t/yd³, pea gravel ~1.3, limestone base ~1.5. A tandem dump truck carries 10–14 tons, which is why the calculator shows truckloads: two loads spaced a day apart lets you spread and compact the first before the second arrives.

Cost Per Square Foot, Broken Down

Materials alone, at a 4 inch compacted layer of crushed stone, run roughly $0.50 to $0.75 per square foot: that is about one ton per 60 square feet, multiplied by your per ton price. Add hired grading, a landscape fabric layer, and machine compaction and the total climbs closer to $2 to $4 per square foot for a full build. Run your own square footage through the construction cost estimator to line it up against the rest of the project budget, or the job costing calculator if you are quoting the work for a client.

Working Out Truckloads From Total Tonnage

Once you know your total tonnage, divide by the truck capacity your quarry actually runs, not a number you guessed. A tandem dump truck typically hauls 10 to 14 tons a trip, so a 25 ton order usually means two trips, and a 40 ton order usually means three. Ask the yard for their truck's rated capacity before you place the order: some smaller operations run single axle trucks that carry closer to 8 tons, which changes your delivery count and can push the per load delivery fee higher overall.

Fabric Before Gravel

A woven landscape fabric or geotextile laid under the base layer, before any stone goes down, stops the subgrade soil from working its way up into the gravel over time. Skip it on soft or clay heavy ground and you will likely see potholes and soft spots within a year or two, no matter how well the stone itself was compacted. Fabric is a separate line item from the stone tonnage above and is usually priced by the roll, not by weight.

Timing The Order Around Weather

Gravel compacts best when the base soil is dry, not frozen and not saturated. Ordering right after heavy rain or during a spring thaw means the truck can rut the subgrade before the stone is even down, and you may end up reordering base material to fix it. In freeze thaw climates, a driveway built in late fall often needs a top up pass the following spring once the ground settles, so budget a smaller follow up order rather than treating the first delivery as final. See more sizing tools in the construction tools category.

Related tools

Setting posts along the drive? Concrete for fence posts. Pouring a concrete apron instead: construction cost estimator. Quoting gravel work: job costing calculator + contractor markup.

How the gravel volume is calculated

Compaction factors and why raw volume lies

Loose gravel compacts 15–25% after installation. A driveway requiring 10 cubic yards of compacted #57 stone actually needs 11.5–12.5 yards delivered. Skipping this factor is the single most common ordering mistake. Fine crusher run (¾-minus) compacts closer to 20–25% because fines fill voids aggressively. Coarse decorative pea gravel compacts only 10–12%. Always apply the correct factor for each layer, not a blanket estimate.

Load ratings, drainage codes, and what inspectors check

IRC Section R403 does not govern gravel driveways directly, but local jurisdictions often require a minimum 4-inch compacted base depth for any surface subject to vehicle loads. Commercial properties face stricter thresholds: AASHTO guidelines recommend 6–8 inches of compacted aggregate base for driveways serving vehicles over 10,000 lb GVW. Drainage slope must meet a minimum 2% cross-fall (¼ inch per foot) to prevent standing water and surface rutting. Some counties also require a stormwater permit if impervious area added exceeds 500 sq ft - gravel is typically exempt because it drains, but verify locally before breaking ground.

Material cost benchmarks and what the calculator excludes

Crushed limestone #57 runs $30–$45 per ton delivered within 30 miles of most quarries as of 2025. Crusher run (base layer) is cheaper at $20–$35 per ton. Pea gravel and decorative river rock spike to $55–$80 per ton. Delivery fees add $50–$120 per load for a standard 14-ton tandem. The calculator returns volume and weight only - it does not price haul distance, gate fees, fuel surcharges, or compaction equipment rental (plate compactor rental averages $90–$140 per day). Use the construction cost estimator to build a full line-item budget and the job costing calculator to track spend against that estimate once work begins.

Edge conditions the tool does not model

The calculator assumes a rectangular footprint with uniform depth. Tapered driveways, curved edges, crowned cross-sections, and French drain trenches alongside the surface all require manual geometry adjustments before entering dimensions. A driveway with a 3-inch crown across a 12-foot width adds roughly 8% more material than a flat calculation suggests. Sub-base soft spots - common in clay soils - may require geotextile fabric plus an additional 2–4 inches of coarse fill below the calculated base layer. Bringing in screened soil or fill on the same job? How many cubic yards of topsoil you need covers that volume math.