🛣️ Asphalt Calculator
Calculate the volume, weight in tons, and cost of asphalt needed for driveways, parking lots, and road projects. Supports both metric and imperial units.
Density: 2.36 t/m³ (147 lb/ft³). Cost shown only when price per ton is provided.
Asphalt Depth Guidelines
| Application | Typical Depth |
|---|---|
| Residential driveway | 2–4 inches (50–100 mm) |
| Light-traffic road | 4–6 inches (100–150 mm) |
| Parking lot | 3–5 inches (75–125 mm) |
| Heavy traffic / commercial road | 6–10 inches (150–250 mm) |
Frequently Asked Questions
Asphalt weight is calculated by multiplying volume (in m³) by the density of compacted asphalt, typically 2.36 tonnes per m³ (about 147 lb/ft³). The exact density varies with aggregate type and bitumen content, but 2.36 t/m³ is the standard industry value.
At 1 inch depth: approximately 0.053 tons per square yard, or 0.006 tons per square foot. At 4 inches: ~0.21 tons per square yard. Use our calculator for precise quantities by entering your exact dimensions.
Hot mix asphalt (HMA) is produced at 150–180 °C and is used for most roads and driveways — it compacts better and is more durable. Cold mix asphalt is pre-mixed with a softening agent and is used mainly for temporary repairs and patches. HMA is generally preferred for permanent installations.
Properly installed hot-mix asphalt can last 20–30 years with regular maintenance (crack sealing, sealcoating every 3–5 years). Factors like traffic load, climate, and base preparation significantly affect longevity.
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