Materials
Asphalt Calculator
Estimate asphalt or bitumen tons and cost from driveway area, slab thickness, and waste allowance.
Calculate
Measurements
Density
Default: 145 lb/ft³
Results
Dimensions • Imperial
Short tons
15.95
Estimated cost
$2,233.00
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About this calculator
Method, formulas, and limits.What this does
Estimates the tons of asphalt or bitumen needed for paving by converting dimensions and thickness into volume, applying material density and waste, and optionally calculating cost.
Who it is for
For contractors, property owners, and DIYers planning driveways, parking areas, or paths who need to estimate material and budget cost.
How it works
Enter dimensions or a known area, choose imperial or metric units, set thickness and waste, and optionally provide a custom density or price per ton. The result shows US short tons, metric tonnes, area, volume, and cost when selected.
Limitations
The estimate depends on the density and waste assumptions. Actual asphalt mix, compaction, site conditions, supplier pricing, taxes, delivery, and labor can change the final quantity and cost.
Key calculations
- Area and volume
- length × width = area; area × thickness = volume
- Tonnage
- volume × density ÷ 2,000 × (1 + waste ÷ 100) = short tons
- Metric conversion
- metric tonnes = short tons × 0.90718474
Reference ranges
- Typical residential thickness
- A driveway often uses about 2–3 inches of asphalt, while parking areas may need 3–4 inches depending on use and base conditions.
- Standard density
- The default density is 145 lb/ft³ for a typical hot-mix asphalt estimate. Confirm the mix density with your supplier when accuracy matters.
- Waste allowance
- A 5–10% allowance is a common planning range, but the right value depends on site shape, edges, access, and compaction.
How to use it
- 1.Choose unitsUse Imperial for feet, inches, and pounds per cubic foot, or Metric for meters, millimeters, and the same density convention.
- 2.Choose an input pathEnter length and width, enter a known area, or use Cost mode to add a price per ton.
- 3.Set thickness and wasteEnter the planned slab thickness and a waste allowance for cutting, compaction, and site variation.
- 4.Review tonnage and costUse the result panel to compare short tons, metric tonnes, volume, and the optional cost estimate.
Enter the paved area, planned thickness, density, and waste allowance. The calculator converts the resulting volume into short tons and metric tonnes.
It uses 145 lb/ft³ by default. Enable Custom density when your supplier provides a different value.
Yes. Select Cost mode and enter the price per ton. The estimate multiplies the calculated short tons by that price.
The volume-to-weight calculation can also be used for reclaimed asphalt, but recycled mixes may have a different density, so adjust the custom density when needed.
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