Asphalt Calculator — Tonnage and Cost
Calculate how much hot mix asphalt you need in tons and cubic yards. Enter your project dimensions and thickness to get instant tonnage, volume, and cost estimates for driveways, parking lots, and roads.
Asphalt Calculator
Asphalt Thickness Guide
| Application | Inches | Centimeters |
|---|---|---|
| Overlay (resurfacing) | 1.5–2 in | 4–5 cm |
| Residential driveway | 2–3 in | 5–8 cm |
| Parking lot | 3–4 in | 8–10 cm |
| Commercial / heavy traffic | 4–6 in | 10–15 cm |
| Road base | 6–8 in | 15–20 cm |
How to Calculate Asphalt Tonnage
- Measure length and width of the area in feet.
- Determine thickness in inches: 2–3″ for residential driveways, 3–4″ for commercial.
- Calculate volume: L × W × (thickness ÷ 12) = cubic feet.
- Calculate weight: Multiply cubic feet by 145 lb/cu ft, then divide by 2,000 for tons.
Imperial example: A 20 × 40 ft driveway, 3 inches thick: 20 × 40 × (3/12) = 200 cu ft × 145 = 29,000 lbs = 14.5 tons ≈ 7.41 cubic yards.
Metric formula: Tonnes = L (m) × W (m) × D (cm) × 2,323 kg/m³ ÷ 100,000
Metric example: A 6 m × 12 m driveway, 8 cm thick: 6 × 12 × 0.08 = 5.76 m³ × 2,323 kg/m³ = 13,380 kg = 13.38 tonnes.
Asphalt Cost Breakdown
- Material only: $100–$200 per ton ($110–$220 per tonne) of hot mix asphalt.
- Installed: $3–$6 per sq ft ($32–$65 per m²) for a residential driveway.
- Typical 2-car driveway (20 × 24 ft / 6 × 7.3 m, 3″ / 8 cm): ~5 tons (~4.5 tonnes) material + labor = $2,500–$5,000 total.
Hot Mix vs Cold Patch
Hot Mix Asphalt
Professional application using a paving machine. Best durability and smoothest finish. Requires minimum quantities (usually 1+ ton). Applied at 275–325°F — not a DIY material.
Cold Patch
DIY-friendly for potholes and small repairs. $15–$25 per 50 lb bag. No minimum order, no special equipment. Apply, compact, and drive on immediately. Temporary — may need reapplication.
Frequently Asked Questions
How do I calculate asphalt tonnage?
Area (sq ft) × thickness (in) ÷ 12 × 145 (lb/cu ft) ÷ 2,000 = tons. Example: 20 × 40 ft at 3″: 200 cu ft × 145 = 29,000 lbs = 14.5 tons.
How much does an asphalt driveway cost?
$3–$6 per square foot installed, or $2,500–$5,000 for a standard 2-car driveway (20 × 24 ft, 3″ thick). Material alone: $100–$200 per ton.
How long does an asphalt driveway last?
15–20 years with proper maintenance. Seal-coat every 3–5 years, fill cracks promptly, and avoid heavy vehicles during extreme heat when asphalt softens.
Asphalt vs concrete driveway — which is better?
Asphalt: cheaper ($3–$6/sq ft vs $6–$12), faster install, easier repair, but shorter lifespan (15–20 yrs vs 30+). Concrete: more durable, more design options, higher upfront cost.
Related Calculators
- Gravel Calculator — calculating gravel base under asphalt?
- Concrete Calculator — comparing asphalt vs concrete?
- Cubic Yards Calculator — generic volume calculator
- Paver Calculator — alternative paving material
- Area Unit Converter — convert between square feet, square meters, acres, hectares
- Sales Tax Calculator — add sales tax to your paving cost estimate
- All Construction Calculators
Asphalt density: 145 lb/cu ft (hot mix asphalt, compacted). Actual density may vary by mix design. Prices are 2025 US national averages and will vary by region and supplier.
