Asphalt Calculator
Calculate asphalt in tons from paving dimensions.
Asphalt Tonnage Formula
Multiply length, width, and thickness in feet, divide by 27 for cubic yards, then multiply by asphalt density (about 2.025 tons per cubic yard).
Understanding Asphalt Quantities
Asphalt Thickness Standards
| Application | Asphalt Thickness | Base Layer | Total Depth |
|---|---|---|---|
| Residential Driveway | 2-3 inches | 6-8 inches gravel | 8-11 inches |
| Light Commercial Parking | 3-4 inches | 8-10 inches | 11-14 inches |
| Heavy Commercial / Truck | 4-6 inches | 10-12 inches | 14-18 inches |
| Municipal Road | 4-8 inches | 12-18 inches | 16-26 inches |
How to Calculate Asphalt Tonnage
Asphalt is ordered by weight (tons), not volume. One ton of hot mix asphalt covers approximately 80 square feet at 2 inches compacted depth. The formula is:
- Calculate the area in square feet (length x width).
- Multiply area by thickness in feet to get cubic feet.
- Multiply cubic feet by 145 lbs per cubic foot (HMA density).
- Divide by 2,000 to convert to tons.
A standard residential driveway (12 x 40 feet at 2.5 inches thick) requires approximately 3.5 tons of hot mix asphalt.
Asphalt Cost Breakdown
Hot mix asphalt costs - per ton for material. Installation adds - per square foot. A typical residential driveway (480 sq ft) costs ,500-,000 installed.
Asphalt Calculator FAQ
A standard 12x40 foot driveway at 2.5 inches thick requires about 3.5 tons of hot mix asphalt. Measure area in square feet, multiply by thickness in feet, multiply by 145, and divide by 2,000.
One ton covers approximately 80 square feet at 2 inches compacted depth, 53 sq ft at 3 inches, and 40 sq ft at 4 inches.
2-3 inches of compacted asphalt over a 6-8 inch compacted gravel base. Areas with heavy traffic should use 3-4 inches.
Hot mix is produced at 300 degrees F for permanent surfaces. Cold mix is pre-mixed in bags for pothole patching only - not suitable for full driveway installation.
Asphalt paving costs - per square foot installed, translating to ,500-,000 for a standard residential driveway.
A properly installed asphalt driveway lasts 15-30 years. Sealcoating every 3-5 years extends lifespan significantly.