# Asphalt Driveway & Paving Calculator > Free asphalt calculator: hot-mix tonnage, truckloads and cost for driveways, parking lots and roads — multiple sections, metric or imperial, all in your browser. Tonnage, truckloads & cost for hot-mix asphalt — driveways, lots, roads. - **HTML page:** https://siteometry.com/en/tools/asphalt-driveway-calculator - **Category:** [Hardscaping & Paving](https://siteometry.com/en/tools/category/hardscaping-paving) - **Figures live on the page:** tables, diagrams and worked figures the text refers to ("the table below") are drawn by the page and are not reproduced here. Each section below links to its anchor on the page. - **Runs in the browser:** Siteometry calculators need no account and send no input anywhere — every number below is computed on the visitor's own device. ## How to calculate asphalt tonnage in 5 steps 1. **Choose units** — Select metric (m, m², tonnes) or imperial (ft, ft², short tons) at the top of the page. 2. **Pick an application** — Choose driveway, parking lot, road, path or overlay to seed a sensible compacted thickness and waste allowance — both stay editable. 3. **Pick a mix** — Select a mix preset so the tool knows the compacted density, or choose Custom and enter your own. Density is what turns volume into tonnage. 4. **Add sections** — Add one section per area, pick its shape (rectangle, circle, triangle or a direct area), and enter the dimensions. Use a per-section override for a thicker apron or a different mix. 5. **Read the results** — The rail shows ordered tonnage as the headline, plus truckloads, paved area, compacted volume and an optional cost with an effective cost per unit area. _On the page: https://siteometry.com/en/tools/asphalt-driveway-calculator#howto_ ## Asphalt Driveway & Paving Calculator Hot-mix asphalt (HMA) is bought and delivered by weight, not by area, so the number that actually books your delivery is tonnage — not the square metres or square feet you measured on the ground. This calculator turns a driveway, parking lot or road into the tonnage you need to order, the truckloads it fills and an optional cost, all in your browser. Enter the shape and dimensions of each area, choose an application (driveway, parking lot, road, path or overlay) to seed a sensible compacted thickness, and pick a mix so the tool knows the compacted in-place density. It multiplies area × compacted thickness × density to get tonnage, then adds a waste allowance to give the figure you actually order. Add a section for each part of the job — the main run, an apron, a turning bay — and the results rail totals the whole project as you type. Nothing is sent to a server. _On the page: https://siteometry.com/en/tools/asphalt-driveway-calculator#intro_ ## How to use the asphalt calculator Choose metric or imperial units at the top; the calculator remembers your preference in your browser. Metric works in metres, square metres and tonnes, imperial in feet, square feet and short tons. Set the shared surface: an application preset seeds the compacted thickness and a waste percentage in one click, and a mix preset seeds the compacted density. Every one of those values stays editable, so you can dial in your own mix design or a contractor's spec. Add a section per area, pick its shape, and enter the dimensions. Need a thicker apron or a different mix on one section? Open its override and set thickness, mix and density for that section alone. The rail accumulates every valid section into one ordered tonnage, truckload count and cost. _On the page: https://siteometry.com/en/tools/asphalt-driveway-calculator#how-calculator-works_ ## How asphalt tonnage is calculated Asphalt estimating is a single weight-first chain, referenced to the compacted thickness you actually want on the ground: compacted volume = area × compacted thickness, and tonnage = compacted volume × compacted density. There is no separate loose-volume step. The reason is that the mix densities used here are already compacted, in-place densities — the roller consolidation is baked into the number. Paving crews handle the loose-to-compacted difference by setting the screed height about 1.25× the target thickness, but that is a laydown practice, not estimating maths. You measure and order against the finished, compacted thickness. Ordered tonnage = tonnage × (1 + waste). Hot-mix is rarely returnable once it leaves the plant, so a waste allowance of 5–10% covers spillage, joints, hand-work and slight over-thickness. Truckloads = total ordered tonnage ÷ truck payload, rounded up, because a part-filled last load still ties up a whole truck. _On the page: https://siteometry.com/en/tools/asphalt-driveway-calculator#tonnage-formula_ ## Mix, thickness & coverage reference The densities and thicknesses below are the presets the calculator ships with, gathered from asphalt-industry references and contractor guidance. They are typical starting points — every value is editable, so override them with your own mix design or local spec. The coverage table applies the well-known contractor rule of thumb: dense-graded asphalt covers roughly 110 lb per square yard per inch of compacted thickness (about 2,320 kg/m³). Use it for a quick sanity check on the tonnage the calculator returns. _On the page: https://siteometry.com/en/tools/asphalt-driveway-calculator#mix-thickness-reference_ ## Frequently asked questions ### How much asphalt do I need for my driveway? Multiply the paved area by the compacted thickness to get volume, then by the asphalt's compacted density to get weight. A 40 m² (430 sq ft) driveway at 50 mm (2 in) of dense-graded HMA works out to about 4.6 tonnes (5.1 short tons) before waste. Add 8–10% waste and you would order roughly 5 tonnes. The calculator does all of this as you type — just enter the dimensions and pick a driveway application. ### How many tons of asphalt per square foot or square yard? As a rule of thumb, dense-graded asphalt is about 110 lb per square yard for every inch of compacted thickness (roughly 58 kg per square metre per 25 mm). So 2 inches covers a square yard with about 220 lb, and 1,000 sq ft at 2 inches needs roughly 12 short tons. The coverage table above lists common thicknesses; the calculator uses your exact area and mix density rather than a rule of thumb. ### How thick should an asphalt driveway be? A residential driveway is commonly 50 mm (2 in) of compacted surface course over a compacted aggregate base, with 75 mm (3 in) for driveways that see RVs or delivery trucks. Parking lots run 75 mm (3 in), private roads 100 mm (4 in) or more, and paths or overlays around 38 mm (1.5 in). The application preset seeds these, and you can edit the thickness for your own spec. ### How many truckloads of asphalt will I need? Because asphalt is dense, trucks hit their weight limit long before they run out of space, so truckloads are counted by weight. The calculator divides your total ordered tonnage by the truck payload and rounds up. A tandem hauls about 16 short tons, a tri-axle about 22, and a UK 8-wheel tipper about 20 tonnes — all editable presets. Most single driveways fit in one load. ### What is the density of asphalt? Compacted dense-graded hot-mix asphalt is about 2,320 kg/m³ (145 lb/ft³). Open-graded and porous mixes are lighter at around 2,000 kg/m³ because of their higher void content, while stone matrix asphalt (SMA) is similar to dense-graded at roughly 2,280 kg/m³. These are compacted, in-place densities — the value the tonnage calculation needs — and every one is editable in the calculator. ### Does this calculator work for hot-mix and cold-mix asphalt? The presets are built around hot-mix asphalt (HMA), the material used for driveways, lots and roads. Cold-mix and recycled-millings surfaces have different, usually lower, compacted densities and are less predictable, so if you are using one, switch the mix to Custom and enter your supplier's density. The area × thickness × density maths is the same for any paving material. ### How much waste should I add to an asphalt order? Between 5% and 10% is typical. Because hot-mix cannot be stored or returned once it is delivered, it is safer to round up than to run short mid-pour. The calculator seeds 10% for driveways, 8% for parking lots and roads, and 5% for overlays, but the waste field is editable for your own site conditions. ### Should I use asphalt or concrete for my driveway? Asphalt is usually cheaper to install, quicker to cure and easier to repair, while concrete lasts longer and needs less maintenance in mild climates. This tool estimates asphalt; if you want to compare, the concrete driveway calculator in the cross-links below runs the same area × thickness maths for a concrete pour so you can weigh the material quantities side by side. ### Can I use metric or imperial units? Both. Toggle at the top of the page: metric gives metres, square metres and tonnes; imperial gives feet, square feet and short tons. Switching converts every dimension, thickness, payload and price in place, and the calculator remembers your choice in your browser. ### Is the calculator private? Yes. Every calculation runs locally in your browser — your dimensions, mix figures and costs are never sent to a server. Your project is saved only in your own browser's local storage, so it is still there when you come back. _On the page: https://siteometry.com/en/tools/asphalt-driveway-calculator#faq_ ## Related calculators - [Gravel, Sand & Aggregate Calculator](https://siteometry.com/en/tools/gravel-aggregate-calculator) - [Paver & Patio Calculator](https://siteometry.com/en/tools/paver-patio-calculator) - [Retaining Wall Block Calculator — Blocks, Base, Drainage & Caps](https://siteometry.com/en/tools/retaining-wall-block-calculator) - [Steel Quantity Estimator — Steel per m³ of Concrete](https://siteometry.com/en/tools/steel-quantity-estimator)