Asphalt Milling Calculator – Accurate Volume & Weight Estimates
Our asphalt milling calculator makes it easy to estimate the amount of recycled asphalt (RAP) needed for your project. Whether you're working on a driveway, road base, or resurfacing job, millings are a cost-effective and eco-friendly material that compacts well and performs reliably.
How This Asphalt Millings Calculator Works
- Calculates total volume in cubic feet
- Converts volume to cubic yards and tons
- Uses an assumed density based on material condition (loose vs compacted)
Calculation Transparency
We estimate volume from your dimensions, then convert volume to weight using an assumed RAP density. Density varies by moisture, gradation, and compaction, so this calculator provides a practical estimating baseline.
- Compacted millings: 140 lb/ft³ (default)
- Loose millings: 120 lb/ft³
Tip: If your supplier provides a local density or recommends an order adjustment, use that guidance for final purchasing.
Simply enter the length, width, and depth of your project area to get quick results. This tool is ideal for homeowners, landscapers, and contractors planning resurfacing or base layer jobs.
Asphalt Milling Formula
(Length × Width × Depth in feet) ÷ 27 = Cubic Yards
Volume in ft³ × Density (lb/ft³) ÷ 2000 = Tons
Asphalt Millings Coverage (Approx.)
| Compacted Depth | 1 Ton Covers (Approx.) |
|---|---|
| 2 inches | 80–100 sq ft |
| 3 inches | 55–65 sq ft |
| 4 inches | 40–50 sq ft |
Helpful Tips
- Add 5–10% extra to account for settling and uneven terrain
- Double-check your depth measurement after compaction
- Always confirm with your supplier for material density
Why Use Recycled Asphalt (Millings)?
Asphalt millings are a sustainable, budget-friendly alternative to fresh hot mix asphalt. They are created when existing asphalt surfaces are ground up and reused, offering the same durability and structure for a fraction of the cost.
- Environmentally responsible – reduces landfill waste
- Lower cost than virgin asphalt materials
- Good compaction and drainage properties
- Ideal for rural roads, driveways, farm lanes, and parking lots
Typical Compaction Depths
The depth of millings you need depends on the application:
- 2–3 inches: Light vehicle traffic, residential driveways
- 4–6 inches: Heavier use such as RVs or work trucks
- 6+ inches: High-traffic or commercial applications
Frequently Asked Questions
Q: How many tons of asphalt millings do I need?
A: Enter your length, width, and depth in the calculator to estimate total tons. For ordering, consider adding 5–10% extra for waste, settling, and grade variations.
Q: How much does asphalt milling weigh per cubic yard?
A: It depends on density and compaction. At 140 lb/ft³ (compacted RAP), one cubic yard weighs about 3,780 lb (≈ 1.89 tons). Loose millings can weigh less.
Q: Asphalt millings coverage per ton
A: Coverage depends on depth. A common rule of thumb is about 80–100 sq ft per ton at a 2-inch compacted depth. Use the coverage table above or calculate your exact project size.
Q: RAP density per cubic yard
A: RAP density varies by moisture, gradation, and compaction. This calculator uses 140 lb/ft³ for compacted millings (≈ 1.89 tons/yd³) and 120 lb/ft³ for loose millings as a practical baseline.
Q: Asphalt millings for driveway depth
A: Many residential driveways use 2–3 inches compacted for light traffic. For heavier vehicles, 4–6 inches may be appropriate depending on base strength and drainage.
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Accuracy & Review
Reviewed by: Dave Whitaker
Dave is a second-generation paving contractor focusing on asphalt compaction, lift thickness, and milling yields for driveways and small parking lots. He reviewed the assumptions, calculation logic, and practical estimating guidance used in this calculator.
Last updated:
See: Methodology · Data Sources · Review Board
Important Estimate Disclaimer
Estimates are intended for general planning only and should not be considered paving or engineering specifications. Actual quantities may vary based on compaction, base preparation, climate, and traffic load.
Refer to our Methodology and Data Sources for calculation assumptions.
Asphalt depth, sub-base stability, and drainage conditions may materially impact performance and required material thickness.