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Asphalt Calculator
Calculate asphalt tonnage and cost for driveways, parking lots, and paving projects
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Asphalt Calculator
Standard driveway: 2–3 in. Parking lot: 3–4 in. Road: 4–6 in.
How to Calculate Asphalt Tonnage
Asphalt is sold and priced by the ton, but measured by volume. To convert, use the density of compacted hot mix asphalt: 145 lbs per cubic foot.
Asphalt Tonnage Formula
Cubic Feet = Length (ft) × Width (ft) × Depth (ft)
Tons = Cubic Feet × 145 ÷ 2,000
Cubic Feet = Length (ft) × Width (ft) × Depth (ft)
Tons = Cubic Feet × 145 ÷ 2,000
Standard Asphalt Depths by Application
| Application | Asphalt Depth | Base Depth |
|---|---|---|
| Residential Driveway | 2"–3" | 4"–6" gravel |
| Commercial Parking | 3"–4" | 6"–8" gravel |
| Heavy Traffic Road | 4"–6" | 8"–12" gravel |
| Walking Path | 1.5"–2" | 3"–4" gravel |
Asphalt vs. Concrete: Which Should You Choose?
Asphalt is generally 30–40% cheaper to install than concrete and takes 24–48 hours to cure vs. 7 days for concrete. It's easier to repair and handles freeze-thaw cycles better. Concrete lasts longer (30–50 years vs. 20–30 for asphalt) and requires less maintenance.
Pro Tips for Asphalt Projects
- Always compact the subbase before paving — poor base is the #1 cause of early failure
- Install asphalt when air temperature is above 50°F (ideally 60°F+) for proper compaction
- Seal coat 6–12 months after installation, then every 2–5 years
- Add 10–15% to your tonnage estimate to account for waste and compaction variance
- Get at least 3 quotes — asphalt pricing varies significantly by region and contractor
? Frequently Asked Questions
How much does asphalt weigh per cubic yard?
Compacted asphalt weighs approximately 145 lbs per cubic foot, which equals about 3,915 lbs (nearly 2 tons) per cubic yard. Hot mix asphalt density can range from 140–150 lbs/ft³ depending on the mix design.
How many tons of asphalt do I need for a driveway?
A standard two-car driveway (20×40 ft) with 3" depth requires about 9–10 tons of asphalt. Use our calculator above for precise tonnage based on your exact dimensions and desired depth.
How thick should a residential asphalt driveway be?
Residential driveways typically use 2"–3" of compacted asphalt over a 4"–6" compacted gravel base. Commercial driveways or areas with heavy vehicle traffic should use 3"–4" of asphalt.
What is the cost of asphalt per ton?
Asphalt typically costs $80–$130 per ton for materials. Installed prices (including labor) range from $150–$300 per ton depending on your region, project size, and site conditions.
How do I calculate asphalt tonnage?
Multiply Length (ft) × Width (ft) × Depth (ft) × 145 lbs/ft³, then divide by 2,000 to get tons. Our calculator does this automatically and adds a standard waste factor.
Related Calculators
💡 Pro Tips
Always add 10% extra to material estimates to account for waste, cuts, and mistakes.