Asphalt Millings Calculator
Estimate asphalt millings, crushed asphalt, or recycled asphalt for a driveway or base from measured area, compacted thickness, and a project-specific placed bulk density.
Asphalt millings quantity inputs
Enter a project-specific placed bulk density.
Estimated quantity
Enter positive area, thickness, and density values.
What the result means
The calculator reports geometric compacted volume, base weight, and a separate order quantity after any allowance. It intentionally requires a placed bulk-density input instead of assuming one product value.
Formula
Worked example
For 1,000 sq ft at 3 inches using 120 lb/ft³: volume is 250 ft³ or 9.26 yd³; weight is 30,000 lb or 15 US tons before allowance.
Asphalt millings driveway estimate
Measure only the planned recycled asphalt surface, enter the compacted—not loose—depth, and obtain a placed bulk density for the actual millings source. Driveway slope, drainage, subgrade support, grading, compaction, edge restraint, and local restrictions still need project-specific review; the calculator estimates quantity rather than designing the pavement.
Crushed asphalt and recycled asphalt terminology
Suppliers may use “crushed asphalt,” “recycled asphalt,” “RAP,” and “millings” differently. This calculator can estimate an unbound placed material when its actual bulk density is entered. It should not be used to treat a plant-produced recycled mix as though it were the same product.
Reference table at 120 lb/ft³
| Area | Depth | Volume | Weight |
|---|---|---|---|
| 1,000 sq ft | 2 in | 6.17 yd³ | 10.0 US tons |
| 1,000 sq ft | 3 in | 9.26 yd³ | 15.0 US tons |
| 1,000 sq ft | 4 in | 12.35 yd³ | 20.0 US tons |
Common mistakes
- Using hot-mix compacted density for variable millings.
- Confusing RAP in a plant mix with millings placed directly.
- Adding an unexplained allowance or assuming loose depth equals compacted depth.
Confirm with the supplier or contractor
- Material source, gradation, contamination, moisture, and placed bulk density;
- finished thickness, compaction method, drainage, edge restraint, and local use restrictions;
- truck payload, minimum order, and load rounding.
Source and related tools
FHWA's RAP guidance collection separates RAP use in asphalt mixtures, granular base, and embankment applications. Check the bulk-density concept, compare the aggregate base calculator, driveway asphalt calculator, and hot-mix asphalt calculator, then review the repair or reconstruction decision guide.