Hot Mix Asphalt Calculator: Tons, Screed Depth, and Specifications
Enter your job size and finished thickness, and this hot mix asphalt calculator gives you the tons to order and the loose depth to set on the paver screed. It is built around hot mix itself: roller loss, mix density, lift thickness, and the temperatures that decide how much time your crew has. Use it as a hot mix asphalt calculator square feet tool for driveways and lots, or as a hot mix asphalt calculator tons check against a plant ticket.
- 100% free, no sign-up
- Loose screed depth
- Lift planner
- Driveways to parking lots
Last updated: October 25, 2026
How many tons of hot mix do I need?
Split a thick pavement into lifts
Thick pavements are laid in several lifts, and each lift is rolled before the next goes on.
How to use the hot mix asphalt calculator
Running out of mix with forty feet of driveway left is every crew’s nightmare. Two minutes with the numbers gets you the weight to order from the plant:
- Measure the job. Measure the length and width in feet. For an irregular driveway or pad, split it into rectangles, work out each one, and add the square footage.
- Enter the finished depth. Type the compacted thickness in inches, meaning how thick the mat is after the rollers are done. Most driveways use 2.5 to 3 inches, and commercial areas use 4 to 6 inches.
- Pick the mix. Choose the mix type. Standard surface mix is 145 lb/ft³, while stone-heavy base mixes run closer to 148 lb/ft³.
- Set the buffer and roller loss. Keep a 10% buffer for base dips and edge roll. Leave roller loss at 20% unless your paver operator says otherwise.
- Calculate. Press Calculate to see the tons to order and the loose depth to set on the paver screed so the mat rolls down to your design thickness.
Why accurate hot mix estimates matter
Hot mix leaves the plant at roughly 300°F to 325°F, and from the moment it hits the paver hopper it is losing heat. Once the mat cools to somewhere around 175°F to 185°F, the rollers can’t pack it tight any more. That leaves open voids that let in water and then crack when it freezes.
Order too little and the screed runs dry mid-pull, which leaves a cold seam. Order too much and you pay for tons that stiffen in the truck bed. A good hot mix asphalt calculator keeps you between the two.
How to calculate hot mix asphalt by hand
Compacted hot mix weighs about 145 to 150 pounds per cubic foot. Here is how estimators check the sums on paper before they call the plant. The hot mix asphalt calculator above follows these same steps.
The cubic foot method
Tons = Cubic feet × Density (lb/ft³) ÷ 2,000
With 145 lb/ft³ this shrinks to Area × Thickness × 0.00604.
The 110-pound rule
Paving crews often work in square yards. One square yard of asphalt rolled to 1 inch thick weighs about 110 lbs, so:
Divide square feet by 9 first if you start from feet. For tons from cubic yards, multiply by 1.96 at 145 lb/ft³, or by 2.03 for a 150 lb/ft³ mix.
From compacted depth to loose screed depth
Hot mix settles by roughly a fifth to a quarter under the rollers, so the paver has to lay it thicker than the finished depth:
For a 2 inch finished mat with 20% loss, that’s 2 ÷ 0.80 = 2.5 inches off the screed.
| Compacted depth | Loose at 20% loss | Loose at 25% loss |
|---|---|---|
| 1.5 in | 1.88 in | 2.00 in |
| 2 in | 2.50 in | 2.67 in |
| 3 in | 3.75 in | 4.00 in |
| 4 in | 5.00 in | 5.33 in |
Swipe the table sideways to see all columns.
Hot mix asphalt density reference
These are the densities the hot mix asphalt calculator uses, with what each does to coverage and to the weight of a cubic yard. If your plant quotes a different number, check it with our asphalt density calculator.
| Mix | Compacted weight | Coverage per ton at 2 in | Tons per cu yd |
|---|---|---|---|
| Standard surface mix | 145 lb/ft³ | 82.8 sq ft (9.2 sq yd) | 1.96 tons |
| Dense-graded base or binder | 148 lb/ft³ | 81.1 sq ft (9.0 sq yd) | 2.00 tons |
| Heavy-duty mix | 150 lb/ft³ | 80.0 sq ft (8.9 sq yd) | 2.03 tons |
| Warm mix (WMA) | 143 lb/ft³ | 83.9 sq ft (9.3 sq yd) | 1.93 tons |
Swipe the table sideways to see all columns.
Worked examples
Example 1: residential driveway, 40 by 20 ft at 3 inches
Area = 800 sq ft. Volume = 800 × 0.25 = 200 cu ft. Weight = 200 × 145 = 29,000 lbs, or 14.5 tons. With a 10% buffer that is 15.95 tons, so order 16 tons. That is one full tri-axle load. The paver should be set to 3.75 inches loose.
Example 2: delivery pad, 100 by 50 ft at 4 inches
Area = 5,000 sq ft. Volume = 5,000 × 4 ÷ 12 = 1,666.7 cu ft. Weight = 1,666.7 × 145 = 241,667 lbs, or 120.83 tons. With 10% extra that is 132.92 tons, so order 133 tons. At about 19 tons per tri-axle that’s 7 truck loads. At 4 inches you would normally place it in two lifts of 2 inches each.
What is in hot mix asphalt?
Hot mix asphalt, also called asphalt concrete, is mostly stone with a little glue. It has three parts:
- Crushed stone and sand (about 90% to 95% by weight). Angular rock locks together under the roller and carries the traffic load.
- Asphalt binder (about 4% to 8% by weight). This is the black, sticky petroleum product that coats the stone and seals out water. For binder weights on their own, use the bitumen calculator.
- Air voids (around 3% to 8% by volume once compacted). A little air is deliberate, since it gives the binder room to expand in summer heat without bleeding to the surface.
How is hot mix asphalt made?
Knowing how hot mix is made explains why your crew can’t afford delays.
- Drying. Crushed stone goes through a rotary dryer to drive off moisture.
- Heating. The stone is heated to roughly 300°F to 350°F so the binder will bond to it.
- Mixing. Hot liquid binder is added and churned until every stone is coated.
- Loading. The mix drops into insulated trucks at around 300°F to 325°F, usually under a tarp.
- Laying and rolling. The paver spreads it, and the rollers need to finish while it is still hot enough to compact.
Types of hot mix asphalt
Most driveways and lots use dense-graded mix, but there are others you may see on a spec:
| Type | What it is | Typical use |
|---|---|---|
| Dense-graded HMA | The standard mix with a tight, low-void structure | Driveways, parking lots, city streets |
| Open-graded friction course | Coarse stone that lets water drain through | Highways, to cut spray and hydroplaning |
| Stone matrix asphalt (SMA) | Stone-on-stone skeleton with polymer-modified binder | Heavy truck traffic, rut resistance |
| Warm mix (WMA) | Same quality, produced at lower temperatures | Long hauls, cool weather, paving near homes |
Swipe the table sideways to see all columns.
The mix menu in the hot mix asphalt calculator covers the common ones. For other mixes, type your plant’s figure into the asphalt tonnage calculator, which also counts truck loads.
Hot mix asphalt specifications
State DOT and agency specs vary, but most check the same three things:
- In-place density. The finished mat usually has to reach 92% to 97% of maximum theoretical density.
- Gradation. Sieve limits keep the stone sizes evenly spread so the mix doesn’t segregate.
- Tack coat. A thin spray of emulsion goes on before paving over existing pavement. Rates are commonly around 0.05 to 0.10 gallons per square yard, but your spec rules.
Some plants quote 112 to 115 lbs per square yard per inch instead of 110, because of the local stone. Always check your plant ticket before you pave.
Hot mix asphalt tonnage chart
These are tons to order with a 10% buffer at 145 lb/ft³, for the sizes and depths people ask about most:
| Area | 1.5 in | 2 in | 3 in | 4 in |
|---|---|---|---|---|
| 800 sq ft | 8.0 tons | 10.6 tons | 16.0 tons | 21.3 tons |
| 1,500 sq ft | 15.0 tons | 19.9 tons | 29.9 tons | 39.9 tons |
| 3,000 sq ft | 29.9 tons | 39.9 tons | 59.8 tons | 79.8 tons |
| 5,000 sq ft | 49.8 tons | 66.5 tons | 99.7 tons | 132.9 tons |
| 10,000 sq ft | 99.7 tons | 132.9 tons | 199.4 tons | 265.8 tons |
Swipe the table sideways to see all columns.
For a price on those tons, try our asphalt driveway cost calculator, or our free asphalt calculator square feet page for a fast material estimate.
Pike and other supplier calculators
If you came looking for a Pike hot mix asphalt calculator or another plant’s tool, this one isn’t tied to any supplier. It works with any mix, and you set the density, buffer, and roller loss yourself. Use it to get a number quickly, then confirm the order with the plant you’re buying from.
Tips for ordering hot mix
- Run your size through the hot mix asphalt calculator, then order about 10% more than the math says, to cover base dips and edge roll.
- Schedule trucks so each load arrives hot and doesn’t wait in traffic.
- Set the screed to the loose depth, not the finished depth.
- Compare hot mix with chip seal in the tar and chip driveway cost calculator before you commit to a budget.
More paving calculators
Tons, truck loads, and square yard conversions.
kg/m³, lb/ft³, and core density tests.
Installed driveway cost with base and labor.
See how chip seal compares with hot mix.
Binder weight, tack coat, and emulsion volume.
Price, lifespan, and upkeep side by side.
Frequently asked questions
How to figure hot mix asphalt needed for a job?
Multiply the area in square feet by the thickness in feet (inches divided by 12), multiply by 145 lb/ft³, and divide by 2,000 for short tons. Then add about 10% for waste. The hot mix asphalt calculator above does these steps for you.How thick should hot mix asphalt be installed?
Residential driveways usually get 2.5 to 3 inches compacted. Commercial parking lots need 4 to 6 inches, placed in two or more lifts.How much is 1 ton of hot asphalt?
Plants typically charge about $80 to $200 per ton at the plant, depending on your region, the mix, and the haul. A fully installed job costs far more per ton, because it includes base prep, equipment, and labor.Can hot mix asphalt be laid over existing asphalt or concrete?
Yes, as long as the surface underneath is sound. Clean it, fill the cracks, and spray a tack coat so the new layer bonds. Rates are usually about 0.05 to 0.10 gallons per square yard, but follow your DOT or engineer’s spec.How much does a cubic yard of hot mix asphalt weigh?
At 145 lb/ft³, a compacted cubic yard weighs 3,915 lbs, or 1.96 short tons. Heavier base mixes near 150 lb/ft³ come to about 2.03 tons.How hot does hot mix asphalt need to be when it is laid?
Mix leaves the plant at roughly 300°F to 325°F. Crews aim to finish rolling while the mat is still well above 175°F, because below that the rollers can’t compact it properly.What is the difference between hot mix and warm mix asphalt?
Warm mix uses additives or foaming to produce and place the same quality of pavement at lower temperatures, often 30°F to 50°F cooler. That saves fuel, cuts fumes, and helps on long hauls or cool days.What is the 110-pound rule for asphalt?
One square yard of asphalt compacted to 1 inch thick weighs about 110 lbs. Multiply the square yards by the thickness in inches by 110, then divide by 2,000 to get tons.How do I convert compacted depth to loose screed depth?
Divide the compacted depth by one minus the roller loss. With 20% loss, a 2 inch finished mat needs 2 ÷ 0.80 = 2.5 inches of loose mix off the screed.How many tons of hot mix does a driveway need?
An 800 sq ft driveway at 3 inches compacted needs 14.5 tons at 145 lb/ft³. With a 10% buffer that is about 16 tons.Sources and resources
- National Asphalt Pavement Association (NAPA)
- Federal Highway Administration (FHWA), asphalt pavements
This estimator is for planning. Confirm final tonnage and mix specs with your local plant.
Hot Mix Asphalt Calculator
Free Hot Mix Asphalt Calculator to estimate exact tonnage, volume, tack coat, and truckloads for driveways and paving. Instant regional US price estimates.
Price Currency: USD
Operating System: Web Browser (Windows, macOS, iOS, Android)
Application Category: Business Application