Asphalt Millings Calculator
Estimate recycled asphalt millings volume, weight, and material cost for a driveway or path.
Asphalt Millings Calculator
Asphalt millings calculator results
Asphalt millings tonnage formula
Base Cubic Yards = Area (sq ft) × Thickness (in) ÷ 324
Cubic Yards = Base Cubic Yards × (1 + Waste factor%)
Tons = Cubic Yards × 27 × Unit weight (lb/ft³) ÷ 2,000
Cost = Tons × Price per ton
How the asphalt millings and crushed asphalt calculator works
Recycled asphalt pavement (RAP), also called asphalt millings, crushed asphalt, or grindings, has a lower density than virgin hot mix asphalt. The density field shows 105 lb/ft³ as a planning example; replace it with a supplier or test value when available.
The calculation processes the width and length to determine base area, applies your required thickness to find base volume in cubic yards, adjusts for the selected waste factor percentage, and converts that total volume to tons using your custom unit weight.
To estimate the material cost, enter the local price quoted per ton. Millings are highly affordable recycled materials, often costing a fraction of virgin hot mix.
Crushed asphalt driveway calculator by square feet
If you already have your driveway or pathway square footage, enter dimensions that equal that area. For example, for 1,000 square feet, you can enter 20 ft by 50 ft.
The reference table below shows calculated tons for common project sizes using planning assumptions of 105 lb/ft³ density and an 8% waste factor.
Swipe or scroll horizontally to see more columns.
| Project size | Area | 3 in millings | 4 in millings |
|---|---|---|---|
| 20 x 20 ft driveway | 400 sq ft | 5.67 tons | 7.56 tons |
| 800 sq ft driveway | 800 sq ft | 11.34 tons | 15.12 tons |
| 1,000 sq ft driveway | 1,000 sq ft | 14.18 tons | 18.90 tons |
| 1,500 sq ft driveway | 1,500 sq ft | 21.26 tons | 28.35 tons |
Asphalt millings cost estimate
Because millings are recycled aggregates shaved off during road re-paving projects, they are highly economical. Prices typically run from $10 to $55 per ton at local quarries or asphalt plants.
Keep in mind that the material cost from the calculator does not include grading, trucking, base preparation, or professional installation. High transportation distance can occasionally double the cost of the material delivery.
Common millings thickness and compaction
For driveways and paths, a compacted thickness of 3 to 4 inches is highly recommended. Because millings behave like crushed stone, thin layers under 2 inches tend to shift and disperse under vehicle traffic.
Proper compaction is key to success. Wet the spread millings lightly and run a heavy roller machine or plate compactor over the surface. The heat from the sun combined with heavy vehicle loads will slowly bond the asphalt binder residue, turning it into a semi-solid pavement.
FAQ
How do you calculate asphalt millings tonnage?
Multiply your project's width by its length in feet to get the area. Multiply this by the compacted thickness in inches and divide by 324 to calculate base cubic yards. Add a waste factor (typically 5% to 10%), then multiply cubic yards by 27 and by the density of compacted millings (about 105 lb/ft³), and divide by 2,000 to get the tons.
What unit weight should I use for asphalt millings?
Compacted asphalt millings typically weigh around 100 to 110 lb/ft³ (pounds per cubic foot). Loose or uncompacted millings are lighter, weighing about 90 to 95 lb/ft³. This calculator uses 105 lb/ft³ as a standard compacted planning assumption.
How much area does one ton of asphalt millings cover?
Assuming a compacted density of 105 lb/ft³ and an 8% waste factor, one ton of asphalt millings covers about 70 square feet at 3 inches thick, or about 52 square feet at 4 inches thick.
Why should I add a waste factor for crushed asphalt grindings?
A waste factor (typically 5% to 10%) covers irregular sub-grade shapes, compaction settling, and transport loss. Small or highly irregular driveways benefit from using a higher waste allowance.
Do asphalt millings need compaction?
Yes. For a stable driveway or parking area, spread the millings and roll them thoroughly with a heavy rental roller or vibrating plate compactor. Compacting millings helps them lock together, forming a hard gravel-like surface.
How much do asphalt millings cost per ton?
Asphalt millings are recycled material and cost significantly less than new hot-mix asphalt. They usually cost between $10 and $55 per ton, depending on local highway project supply and trucking distance.
What is the difference between screened and unscreened asphalt millings?
Screened asphalt millings have been passed through a mechanical screen to remove oversized chunks and debris, producing a more uniform particle size. Screened millings compact more evenly and are better suited for driveways and paths where a smooth finish is desired. Unscreened millings cost less but may contain larger fragments that require additional grading before compaction.
Are asphalt millings and crushed asphalt the same thing?
In many driveway estimates, crushed asphalt, recycled asphalt, asphalt grindings, and asphalt millings refer to the same general reclaimed asphalt material. Suppliers may screen or size the material differently, so confirm the local product and use the density field if your supplier gives you a unit weight.