Asphalt Calculator
Calculate how much asphalt you need — enter your driveway or lot size and thickness to get the tons of hot-mix asphalt, the cubic yards, and an estimated cost.
United States — national average · 2026 prices
Material only unless stated as installed. Excludes tax, permits and local labour. Verify with local suppliers — see how we calculate.
How this calculator works
Every figure above comes from the formula below, applied to the assumptions listed. Nothing is looked up from a hidden table — you can reproduce the result by hand.
Formula
cubic yards = area (sq ft) × thickness (in) ÷ 324
tons = cubic yards × 2.0
coverage per ton ≈ area ÷ tons (about 80 sq ft per ton at 2 inches)
Assumptions & limits
- Compacted hot-mix asphalt is taken as 145 lb per cubic foot, which is about 2.0 tons per cubic yard. Mix designs vary by a few percent.
- Asphalt is bought by the ton, so tonnage is the primary figure and cubic yards are shown for cross-checking. Hot-mix is priced at $125 per ton.
- Thickness means the compacted finished thickness. Asphalt is laid loose and rolled, so the loose depth is greater than the number you enter.
- The tonnage covers the asphalt surface only. It excludes the compacted aggregate base — typically 4–8 inches, and the layer that actually carries the load.
- Add 5–10% for edges, compaction and the last partial load. Hot-mix must be placed and compacted while hot, so a second small delivery is rarely practical.
- Residential resurfacing is usually 2 inches compacted; 3 inches suits heavier vehicles and trailers.
Worked example
A 20 ft × 40 ft driveway at 2 inches compacted
- Area = 20 × 40 = 800 sq ft
- Cubic yards = 800 × 2 ÷ 324 = 4.94 yd³
- Tons = 4.94 × 2.0 = 9.88 tons
- Coverage check = 800 ÷ 9.88 = 81 sq ft per ton
Result:About 9.9 tons of hot-mix, roughly $1,111 to $1,420 of material — base work and paving labour are extra.
Built and maintained by Christoph Ballmer, Honeygoat GmbH
Method and constants last checked against the calculator code on August 17, 2026. Independent trade review is not yet in place for this calculator — see how we handle review.
Read the site-wide calculation methodology · estimate vs. quote and safety limits
How much asphalt do I need?
Asphalt paving is sold and delivered by the ton of hot-mix, so estimating a job means turning your area and thickness into a volume, then converting that volume to weight. The calculator above returns tons, cubic yards and an estimated cost from a few measurements — but it helps to know the math behind it so you can sanity-check a paving quote.
The asphalt formula
Volume is area times thickness. Because paving thickness is given in inches while area is in square feet, the quick shortcut keeps area in square feet and thickness in inches:
cubic yards = area (sq ft) × thickness (in) ÷ 324
The 324 comes from the math: a cubic yard is 27 cubic feet, and there are 12 inches in a foot, so 27 × 12 = 324. Compacted hot-mix asphalt weighs about 145 lb per cubic foot, so one cubic yard weighs roughly 3,900 lb — about two tons:
tons = cubic yards × 2 · field rule: 1 ton ≈ 80 sq ft at 2 inches
Worked example: a two-car driveway
Say you are paving a 20 ft × 40 ft driveway with a 2-inch asphalt surface:
- Area = 20 ft × 40 ft = 800 sq ft
- Cubic yards = 800 × 2 ÷ 324 = 4.94 cubic yards
- Tons = 4.94 × 2 = ≈ 9.9 tons of hot-mix
- Cross-check with the field rule: 800 sq ft ÷ 80 sq ft per ton = 10 tons ✓
Add about 8% for compaction and edges and you would order roughly 10.7 tons. At $125 per ton that is about $1,340 in material; a full installed driveway (with base and labor) runs more — see the cost section below.
How thick should asphalt be?
The surface you see is only the top layer. A durable driveway is built up over a compacted aggregate base, which does most of the load-bearing work — skipping or under-building the base is the most common reason asphalt cracks and potholes early.
| Layer | Typical thickness | Role |
|---|---|---|
| Compacted subgrade | — | Graded, compacted native soil |
| Aggregate base (crusher-run) | 4–8 in | Load spreading & drainage |
| Binder / base asphalt (heavy use) | 2–3 in | Structural asphalt layer |
| Surface course (residential) | 2 in (3 in for heavy loads) | The finished driving surface |
For a standard one-to-two-car residential driveway, a 2-inch surface over a well-compacted 4-inch base is typical. Go to 3 inches of surface (and a thicker base) for RVs, trailers or delivery trucks.
Coverage: how far does a ton go?
A handy field rule: one ton of hot-mix covers about 80 sq ft at 2 inches compacted. Coverage falls as thickness rises, because the same weight of asphalt has to spread thinner.
| Thickness | Sq ft per ton (approx.) | Tons per 1,000 sq ft |
|---|---|---|
| 2 inches | ≈ 80 sq ft | ≈ 12.5 tons |
| 3 inches | ≈ 53 sq ft | ≈ 19 tons |
| 4 inches | ≈ 40 sq ft | ≈ 25 tons |
How much does an asphalt driveway cost?
Asphalt cost has two parts: the hot-mix material (by the ton) and the installed job (by the square foot, including base, labor and equipment). The figures below are typical 2026 US ranges and are estimates only — a hot-mix plant, a crew and a roller are needed to lay asphalt, so most driveways are priced per square foot installed rather than by material alone.
| Item | Typical cost (2026 est.) |
|---|---|
| Hot-mix asphalt (material) | $100–$200 / ton |
| New driveway, installed | $3–$7 / sq ft |
| Standard 20 × 40 ft (800 sq ft) driveway | ≈ $2,400–$6,000 |
| Resurface / overlay (over sound base) | $1.50–$3 / sq ft |
| Tear-out & disposal of old surface | +$1–$3 / sq ft |
Price swings with driveway size (bigger = lower per-sq-ft), thickness, how much base and grading is needed, site access for trucks, and regional oil and labor rates. Get two or three itemized bids before you commit.
Asphalt vs concrete
Asphalt is usually the cheaper hard surface up front — often 30–50% less per square foot than concrete — and it cures fast enough to drive on within a day or two. Concrete lasts longer and needs less maintenance, but costs more and cracks are harder to fix. Asphalt is easy and cheap to resurface or seal, which is why it is the budget-friendly driveway choice. Compare with the concrete calculator if you are torn.
Waste & compaction: order a little extra
Asphalt is placed loose and then rolled, so the compacted depth is less than the loose depth — the tonnage you order is a bit more than the finished volume implies. A practical rule:
- Add about 5–10% for compaction, edge losses and the last partial load.
- Coordinate delivery timing. Hot-mix must be laid and compacted while it is still hot, so it can't sit — order it to arrive when the crew and base are ready.
Common mistakes
- Under-building the base. A thin or uncompacted aggregate base is the number-one cause of early cracking and potholes. The base matters more than an extra inch of asphalt.
- Ignoring drainage & slope. Water under asphalt destroys it. The surface needs a slight pitch to shed water away from structures.
- Laying cold mix for a full driveway. Bagged cold-patch is for pothole repairs, not a whole surface — a driveway needs plant-mixed hot-mix laid by a crew.
- Skipping compaction. Ordering the exact calculated tonnage leaves the surface short once it is rolled.
- Not sealcoating. A new asphalt driveway benefits from sealcoating after 6–12 months and every few years after, which roughly doubles its life.
When to hire a pro
Laying an asphalt driveway is a professional job, not a weekend DIY: hot-mix comes from a plant, has to be spread and compacted within a tight temperature window, and needs a paver and roller to get a smooth, durable surface. DIY makes sense only for small repairs — crack filling, cold-patching a pothole or sealcoating. For a new driveway or lot, use this calculator to understand the tonnage and get accurate bids, then hire a paving contractor. For the layers underneath, see the gravel calculator for the base, the concrete calculator to compare, and the cubic yards calculator for any excavation volume. To price the job rather than the material, the asphalt driveway cost calculator adds mobilisation, base and tear-off — which is why a small pad costs far more per square foot than a big one.
Figures here are estimates only and vary by region, mix type and supplier as of 2026 — verify tonnage and delivered/installed pricing with a local paving contractor before you order.
Frequently asked questions
How much asphalt do I need?
Asphalt is bought by the ton. Find the volume (area in square feet × thickness in inches ÷ 324 for cubic yards), then multiply by about 2 tons per cubic yard. A quick shortcut: at a 2-inch finished thickness, one ton covers roughly 80 square feet. The calculator above does this from your dimensions and adds a waste allowance.
How many tons of asphalt are in a cubic yard?
Compacted hot-mix asphalt weighs about 145 lb per cubic foot, so a cubic yard (27 cubic feet) is roughly 3,900 lb — about 2 tons per cubic yard. The calculator uses ~2 tons/yd³, which is standard for hot-mix driveway and lot paving.
How thick should an asphalt driveway be?
For a residential driveway used by one or two cars, 2 inches of compacted asphalt surface is standard; 3 inches is better for heavier vehicles or trailers. That surface goes over a compacted aggregate base of about 4–8 inches — the base does most of the load-bearing work, so do not skip it.
How much does 1 ton of asphalt cover?
At a 2-inch finished thickness, one ton of hot-mix asphalt covers roughly 80 square feet. Coverage drops with thickness — about 53 square feet at 3 inches — because the same weight spreads thinner. Enter your thickness above for the exact tonnage.
How much does an asphalt driveway cost?
Hot-mix asphalt material runs about $100–$200 per ton in 2026. Installed, a new asphalt driveway typically costs about $3–$7 per square foot — roughly $2,400–$6,000 for a standard 20 × 40 ft (800 sq ft) driveway — depending on thickness, base work, site access and region. Tear-out of an old surface adds more.
Is asphalt cheaper than concrete?
Usually, yes — asphalt is generally cheaper to install than concrete (often 30–50% less per square foot) and faster to cure. Concrete lasts longer and needs less maintenance, while asphalt is easier and cheaper to repair or resurface. For a driveway on a budget, asphalt is typically the lower up-front cost.
How much extra asphalt should I order for waste?
Add about 5–10% for compaction, edges and the last partial load. Asphalt is placed loose and then compacted, so the ordered tonnage is a bit more than the finished volume suggests. Coordinate delivery timing too — hot-mix must be laid and compacted while it is still hot.