Asphalt Tonnage & Density Calculator
Calculate asphalt or tarmac tons and tonnes, then convert cubic yards or square yards using an editable density. Coverage and waste stay visible so the result is easier to check.
Enter the project size to see how many tons to order, with waste already built in.
Input mode
Selected: Area
Units
Selected: Imperial (tons)
A little waste is normal for cuts, waste, and site cleanup.
A simple starting point for quick estimates.
Quote range
Project estimate
Results update automatically as you edit.
Asphalt needed
11.6 tons / 10.6 tonnes
This includes the waste allowance you selected.
Volume
5.6 yd³ / 4.2 m³
Handy for checking the amount before ordering.
Coverage per ton
55 sq ft / 5.1 sq m
At 3 in, one ton covers about this much.
Waste added
7%
The estimate adds this buffer before converting to tons.
Final pricing depends on access, prep work, base condition, grading, haul distance, and local crew rates.
Need to share the numbers?
Copy the quantity, thickness, and waste allowance before you check prices with a supplier or contractor.
Check the mix
The calculator uses a density estimate. Your supplier can confirm the right value for the mix you are buying.
Match the unit
Use U.S. tons or metric tonnes to match the supplier's order.
Allow for waste
Curves, cuts, and fixed truck loads may require a small allowance.
Use case
Ordering material or checking a supplier or contractor quote.
Formula
Area × thickness × density, then add a waste allowance.
Next step
Use the same area in the driveway cost calculator to see a pricing range.
Start with the finished area
The calculator works best when you enter the area you actually plan to cover. A rough lot size can push the result too high, while a missing parking pad or flare can push it too low.
If the project is irregular, break it into smaller rectangles or simple shapes, add those together, and then let the calculator do the rest.
Measure the paved area
Include parking pads, flares, and other paved sections before placing an order.
Pick the thickness you really need
Thickness is the part of the estimate that can move fastest. A thin overlay, a normal driveway, and a heavier-duty section will all use different amounts of asphalt even when the square footage is the same.
Start with finished area
Measure the area you plan to pave, not the rough lot size. For odd shapes, split the project into simple rectangles and add them together.
Use the thickness you actually want
Thin overlays and full-depth asphalt do not need the same amount of material. The extra inch or two is where the tonnage changes quickly.
Leave room for the real world
Corners, trimming, small corrections, and the last bit left in the truck all eat into a perfect calculation. A buffer makes the order more realistic.
How much extra asphalt to buy
A perfect order leaves no room for the small things that happen on site. Waste allowance helps cover cuts, rounding, handling loss, and the small amount of material that never lands exactly where you expected.
Simple jobs often need only a light buffer. Projects with curves, edges, or spot repairs usually need a little more so you do not run short halfway through the work.
Allow for site conditions
Add a small allowance for odd shapes or fixed truck loads, then confirm the final quantity with the supplier.
Ton vs tonne
Most U.S. asphalt work is discussed in tons. Metric markets often use tonnes for asphalt or tarmac. Keep the unit consistent when you compare a calculator result with a quote so you do not read the number too high or too low.
If you are not sure which unit a supplier used, ask them to write it out plainly before you place an order.
In Canada, quotes can appear in short tons or metric tonnes. In the UK, the same type of project may be described as tarmac and priced by tonne. Match the wording before comparing numbers.
At the planning density used here, one cubic yard of asphalt is roughly 2 tons, so tonnage and coverage are worth checking before you order. This is the quick tons per cubic yard shortcut.
Match the quote unit
The calculator is only useful if the unit matches the quote. This is the easiest number to double-check before you buy.
Asphalt weight per cubic yard and square yards to tons
Change the density if your plant or mix design provides a better value. The default 145 lb/ft³ is only a planning assumption.
Conversion results
Weight per cubic yard
3,915 lb
1.96 tons/yd³
Cubic yards entered
1.96 tons
Square yards entered
10.88 tons
At 2 in compacted depth