Asphalt Calculator - Tons, Truckloads, Base & Cost

How to use it

1. Pick the shape that matches the job: a rectangle for a straight drive, multiple sections for an L-drive with a widened apron or a parking pad, or a circle for a cul-de-sac pad or turnaround.
2. Enter the dimensions in feet. For a circle use the diameter; the tool squares the radius for you.
3. Choose a use preset. Residential driveway sets 3 in of compacted hot mix over a 6 in base, an overlay sets 1.5 to 2 in and turns the base off, a parking area deepens the base to 8 in, a path drops to 2 in over 4 in. Every number stays editable after.
4. Confirm the compacted asphalt thickness. Hot mix is ordered by compacted thickness: the crew lays it thicker and rolls it down, and the density figure already accounts for that.
5. Leave the material on hot mix, or switch to asphalt millings for a recycled driveway; the density default drops from 145 to 120 lb per cubic foot with it.
6. Keep the gravel base on for a new build (order it in bulk with the gravel calculator) or turn it off for an overlay that reuses the existing base.
7. Set the truck size to match site access, from a 20-ton tri-axle down to a 5-ton single axle. The result shows full loads plus the partial remainder.
8. Turn on sealcoat if the drive is existing or cured, set the coats and the coverage per 5-gallon pail, and read the pail count.
9. Walk the cost ledger. Hot mix, base, and sealer price line by line at your dollars per ton and per pail, with an optional installed dollars per square foot and a delivery line. The total is a planning number, never a bid.
10. Print the coverage table at the bottom for the quick reference at the plant counter.

At a glance

• 12 x 50 ft driveway, 3 in hot mix over 6 in base: 600 sq ft, 150 cu ft, 5.56 cu yd, about 10.9 tons of hot mix and 15.8 tons of crushed base. One 20-ton load covers the asphalt, one covers the base.
• Checking a contractor quote: 700 sq ft drive at 3 in: 700 x 0.25 x 145 / 2000 = 12.7 tons. A quote of 14 tons is fair once waste and handling are in; a quote of 20 is the question to ask.
• 12 x 60 ft farm drive, 4 in compacted millings: 720 sq ft x 0.333 x 120 / 2000 = 14.4 tons, about $220 of material at $15 per ton. Millings need heavy rolling and hot sun to bind.

How the math works

Every number comes from a formula you can check by hand. Area: a rectangle is length times width, a circle is pi times the radius squared, and sections are summed. Volume in cubic feet is area times the compacted thickness in inches divided by 12; divide by 27 for cubic yards, because a cubic yard is 27 cubic feet. Hot mix tons are the cubic feet times the density in pounds per cubic foot, divided by 2000 pounds per ton. The default density is 145 lb per cubic foot, the NAPA-standard compacted planning figure; supplier mix tickets run 140 to 156, and the density is editable. Asphalt millings use the same formula at a lighter default of 120 lb per cubic foot compacted, because reclaimed material is less dense and its exact figure varies by source and compaction. The quick coverage figure is 2000 divided by density times thickness in feet, recomputed live: at 145 lb per cubic foot one ton covers about 82.8 sq ft at 2 in and 55 sq ft at 3 in. Crushed base tons are the base area times the base depth in feet, divided by 27 for cubic yards, times 1.42 tons per cubic yard, the compacted dense-grade aggregate figure this tool shares with the gravel calculator. Truckloads are the tons divided by the load size, rounded up, with the full loads and the partial remainder shown separately. Sealcoat pails are the area divided by the coverage per pail for the chosen coats, rounded up. Cost is each quantity times its editable unit price, plus an optional installed dollars per square foot and a delivery fee. Reference build-ups, all guidance to confirm locally: a residential driveway is 2 to 3 in of compacted hot mix over 6 to 8 in of compacted aggregate base, an overlay is 1.5 to 2 in with no new base, a path is 2 in over 4 in.

1. 1. Get the area from the shape

   A straight drive is length times width, so a 12 by 50 ft driveway is 600 sq ft. An L-drive or a drive plus an apron is easier as sections summed: measure each rectangle and add them. A round turnaround uses the diameter, and the tool squares the radius: a 20 ft circle is pi times 10 squared, about 314 sq ft. Break any odd outline into rectangles rather than guessing an average.

2. 2. Pick the use preset so the build-up starts honest

   The preset sets two numbers a first-timer usually gets wrong: the compacted asphalt thickness and the base depth under it. A residential driveway is about 3 in of hot mix, laid in two lifts, over a 6 in compacted aggregate base. A resurfacing overlay is 1.5 to 2 in with no new base, because it reuses the sound base already there. A parking area deepens the base to 8 in for the standing and turning load. All of it is industry-standard practice to confirm with your paving contractor and local specs, and every number stays editable.

3. 3. Convert to volume, then to tons at compacted density

   Volume in cubic feet is area times thickness in feet: 600 sq ft at 3 in is 600 x 0.25 = 150 cu ft, which is 150 / 27 = 5.56 cu yd. Hot mix weighs about 145 lb per cubic foot compacted, so tons are 150 x 145 / 2000 = 10.9 tons. Order by compacted thickness, not loose depth: the crew spreads it thicker and rolls it down, and the 145 figure already accounts for the rolled, in-place density. Millings run lighter at about 120 lb per cubic foot.

4. 4. Add the crushed base under the pavement

   A new drive is two orders, not one, and the base is often as many tons as the asphalt. Base tons are the base area times the base depth in feet, divided by 27, times 1.42 tons per cubic yard for compacted dense-grade aggregate, the same figure the gravel calculator uses. For the 600 sq ft drive at 6 in: 600 x 0.5 / 27 = 11.1 cu yd, times 1.42 = 15.8 tons of base. Ordering base in bulk? Fine-tune the aggregate order on the gravel calculator, which owns that math.

5. 5. Size the trucks, then price it line by line

   Divide the tons by the load size and round up: 10.9 tons is one 20-ton tri-axle with margin; the base is a second load. The tool shows the full loads plus the partial remainder so you can see when a smaller truck or a combined haul makes sense, and it checks the load against site access, since a 20-ton tri-axle cannot swing into every driveway. Then the ledger prices hot mix at your dollars per ton (a 2026 planning range of $100 to $200 delivered), base at its own rate, and an optional installed dollars per square foot ($7 to $13 for a new residential drive, region and access dependent) so you can compare buying material to a turnkey bid.

Worked scenarios, start to finish

Real jobs with the numbers carried all the way through, so you can see how the estimate is built and check your own figures against them.

The judgement calls a pro makes

Decisions the tool cannot make for you, and how someone who does this for a living thinks them through.

Hot mix, millings, or gravel for a rural drive

The three fill the same trench at very different price and quality points. Hot mix is the smooth, sealed, low-maintenance surface at $100 to $200 per ton delivered. Millings are recycled asphalt at roughly $10 to $30 per ton that compact into a firm, semi-bound surface but never look or shed water like new hot mix, and they want heavy rolling and summer heat to set. Crushed gravel is cheaper still and needs regrading every year or two. For a short residential drive that fronts the street, hot mix usually wins on resale and upkeep; for a long farm or field access drive, millings or gravel often make more sense. The tool prices all three so the tradeoff is dollars, not guesswork.

Full-depth build versus an overlay

If the existing base is sound and the old surface is just tired, a 1.5 to 2 in overlay reuses that base and costs a fraction of a rebuild, which is why the overlay preset turns the base off. But an overlay over a failing base, alligator cracking, or standing-water spots just telegraphs the failure through the new lift within a season. Overlay when the base is solid and the problem is surface wear; go full-depth when the base is pumping, rutted, or was never built right. When in doubt, a contractor coring the drive settles it faster than any calculator.

Trusting the supplier's density over the 145 default

The 145 lb per cubic foot figure is the NAPA-standard planning number, but a specific mix design and aggregate can run anywhere from 140 to 156, and on a big order that spread moves the tonnage by several tons. Before a large purchase, ask the plant for the compacted unit weight of the exact mix and enter it in the density field. For millings the variation is wider still, because the source and screening change the packed weight; treat 120 as a starting point and confirm.

Whether to sealcoat a brand-new driveway

Sealer protects asphalt, but a new driveway needs to cure first, usually 6 to 12 months, so the light oils flash off and the surface hardens; sealing too early traps them and can leave a soft, tacky finish. On a new lay, leave sealcoat off in the tool and plan the first coat for the following year. On an existing or already-cured drive, two coats every few years is the usual maintenance rhythm, and that is when the pail count matters.

Sizing the truck to the site, not just the tonnage

A 20-ton tri-axle is the cheapest way to move asphalt per ton, but it is a big, heavy vehicle that cannot back up a narrow drive, swing a tight gate, or cross a soft lawn without leaving ruts. If access is tight, a 10-ton or a 5-ton single axle costs more per ton but actually reaches the work, and hot mix cools on the truck, so the delivery has to keep up with the crew. The remainder line helps here: if you are one ton into a second big load, a single smaller truck may be the cheaper and easier call.

Common mistakes, and the fix

• × Ordering by loose volume and coming up short after the roller passes.

  ✓ Hot mix is bought by compacted thickness, not by the fluffed-up loose depth. The crew spreads it high and rolls it down to the spec, and the 145 lb per cubic foot density already reflects that rolled weight. Enter the finished compacted thickness and let the density do the work; estimate off loose depth and you order short.

• × Forgetting the base entirely when pricing a new drive.

  ✓ On a new build the crushed base is a separate order, and it is often as many tons as the asphalt itself: 15.8 tons of base under 10.9 tons of hot mix on a typical drive. Keep the base row on for anything but an overlay, and add both loads to the budget and the delivery plan.

• × Using metric density figures from generic sites against a US ton quote.

  ✓ Many general calculators quote asphalt at 2,400 kg per cubic meter, a metric figure. Your local plant quotes short tons at a compacted unit weight near 145 lb per cubic foot. Mixing the two throws the tonnage off badly; this tool works in US short tons and lb per cubic foot throughout, matching how the plant bills.

• × Treating an AI answer's 'one ton covers 80 sq ft' as a universal constant.

  ✓ Coverage per ton depends entirely on thickness. At 145 lb per cubic foot a ton covers about 82.8 sq ft at 2 in but only 55 sq ft at 3 in, because the thicker lift uses more material per square foot. The tool recomputes the coverage live for the thickness you actually entered instead of quoting one number.

• × Assuming millings cover like hot mix.

  ✓ Millings are lighter and less dense than new hot mix, so a ton of millings covers more area at the same nominal thickness, and the packed result varies by source. Switch the material mode to millings so the density drops to 120, and treat the figure as a planning estimate to confirm with the yard.

• × Ignoring delivery minimums on a small tonnage.

  ✓ Plants often have a minimum load and a delivery fee, so a tiny order can cost far more per ton than a full truck. If your job is only a few tons, ask about the minimum, and use the delivery line in the ledger so the per-ton math reflects the real total, not just the material.

Material and unit specifics

Hot mix asphalt (HMA)

Aggregate bound with heated bitumen, laid hot and rolled to a smooth, sealed surface, sold by the short ton from an asphalt plant. Compacted planning density about 145 lb per cubic foot, so a ton covers about 82.8 sq ft at 2 in. Plants often price plant-pickup below delivered, and many throttle or close in cold months, which is exactly why demand and searches crest in late summer. A driveway uses a standard surface mix; the exact designation varies by state DOT.

Asphalt millings (recycled asphalt pavement)

Old asphalt ground up from road resurfacing, reused as a driveway surface at roughly $10 to $30 per ton, a fraction of new hot mix. Lighter and less dense, about 120 lb per cubic foot compacted, and the exact figure swings with the source and how finely it is ground. Millings compact into a firm, semi-bound surface under heavy rolling and summer sun, but they are not sealed and never match new hot mix for looks or drainage. Availability follows local road projects.

Crushed aggregate base

The compacted dense-grade stone layer under the pavement that spreads the load and drains water away from the subgrade, the same material family as the gravel calculator's base gravel. Figured at 1.42 tons per cubic yard compacted. On a new drive it is often 6 to 8 in deep and as many tons as the asphalt on top; an overlay reuses the existing base and needs none. Order it in bulk and fine-tune the aggregate on the gravel calculator.

Sealer, crack filler, and cold patch

The maintenance products that map to a real Home Depot or Lowe's cart: driveway sealer in 5-gallon pails at roughly 250 to 500 sq ft per pail depending on coats, crack filler for the seams, and cold patch for potholes. Sealer goes on a cured surface, so a new drive waits 6 to 12 months for the first coat, then a re-coat every few years. The tool's pail count sizes the sealer order from your area and coverage.

Comparing concrete and asphalt for a driveway

Asphalt is cheaper up front, flexes with frost, and is quick to lay and repair, but it needs periodic sealing and softens in extreme heat. Concrete costs more up front and cracks less forgivingly, but lasts longer with less maintenance. If you are weighing the two, size the slab option on the concrete calculator and compare the two material budgets side by side before deciding.

Truckloads and site access

A 20-ton tri-axle is the standard, cheapest-per-ton delivery, with 15, 10, and 5-ton single axles for tighter sites. Hot mix cools on the truck and has to be laid while workable, so the delivery cadence matters as much as the count. The remainder line shows the tons in the final partial load, which is where a smaller truck or a combined base-and-asphalt haul can save a fee.

Reading your result

The tons figure is the number the asphalt plant quotes against, so it is the first thing to check on any paving bid: a fair quote's tonnage should sit within about 10 percent of this tool's figure, with the extra covering spread waste, handling, and a generous roll. The cubic yards beside it are the same asphalt described the way some suppliers and haulers speak. Truckloads round up because a plant sends whole trucks, and the remainder line tells you how full the last one is, which is what decides whether a smaller truck or a combined haul is cheaper. Read the base row as a second, separate order, not an afterthought, since it is often as heavy as the asphalt. The coverage-per-ton line is thickness-specific on purpose: quote it back only with the thickness attached. Treat the cost ledger as a materials floor at your edited prices, and the optional installed dollars-per-square-foot line as the honest wide range it is, $7 to $13 for a new residential drive, moved by region, access, and how much base work the site needs.

Limitations

• This is a planning estimate, not a quote, and not engineering advice. Thickness and base build-ups are industry-standard practice; local specs, frost depth, and your paving contractor govern.
• It assumes a uniform thickness over a prepared, graded area. A soft or pumping subgrade needs more base, geotextile, or a redesign, which is a contractor call, not a calculator one.
• Density defaults are planning figures. Hot mix runs 140 to 156 lb per cubic foot by mix, and millings vary more by source; the supplier's mix ticket is the governing number for a large order.
• Prices are editable defaults, not live quotes. Plant pricing, delivery minimums, seasonal availability, and haul distance all move the total.
• The base tonnage uses one compacted aggregate density (1.42 tons per cubic yard). Confirm your yard's figure for a big order, or size it on the gravel calculator with the material you are actually buying.
• This page does not design drainage, grade, or slope, and it does not account for tack coat, milling of the old surface, or edge work. Those are line items on a full paving scope.

Frequently asked questions

How much does 1 ton of asphalt cover?

It depends on the compacted thickness, because a thicker lift uses more material per square foot. At the standard 145 lb per cubic foot, one ton of hot mix covers about 82.8 sq ft at 2 in compacted and about 55 sq ft at 3 in. The formula is 2000 divided by the density times the thickness in feet, and the tool recomputes it live for whatever thickness you enter, so you never have to trust a single quoted coverage figure that assumed a thickness you are not using.

How many tons of asphalt do I need for a 20 x 20 pad?

A 20 by 20 ft pad is 400 sq ft. At 3 in compacted hot mix that is 400 x 3/12 = 100 cu ft, and at 145 lb per cubic foot, 100 x 145 / 2000 = 7.3 tons of asphalt. A new pad also needs a crushed base under it, typically 6 in, which adds about 10.5 tons of aggregate. So the full order is roughly 7.3 tons of hot mix plus 10.5 tons of base, and the tool works both in one pass.

How much does an asphalt driveway cost?

As an editable planning range: hot mix runs about $100 to $200 per ton delivered depending on the plant, the mix, and the season, and a turnkey installed driveway commonly runs $7 to $13 per square foot depending on region, site access, and how much base work is needed. A 640 sq ft drive is therefore roughly $4,500 to $8,300 installed, or about $2,300 in material if you are laying it yourself. The tool prices it line by line at prices you edit, so the total reflects your job and your local quotes, never a national average or a lead-gen bait number.

Are asphalt millings cheaper than hot mix?

Dramatically. Recycled asphalt millings run roughly $10 to $30 per ton against $100 to $200 for new hot mix, so a 14-ton driveway is about $220 in millings versus over $2,000 in hot mix. The tradeoff is surface quality: millings compact into a firm, semi-bound driveway but they are not sealed, they never look or shed water like new asphalt, and they need heavy rolling and hot weather to bind. For a long rural or field drive the savings usually win; for a short drive that fronts the street, most owners still choose hot mix.