Asphalt Calculator
Calculate how many tons of asphalt you need for your driveway, parking lot, or road project based on area and thickness.
Asphalt Needed
Asphalt tonnage is calculated from the volume of the area to be paved and the density of hot mix asphalt (approximately 145 lbs per cubic foot or 2,322 kg per cubic meter).
Volume = Length x Width x Thickness
Tons = Volume x Density
Standard asphalt density: ~145 lb/ft3 (2,322 kg/m3)
Typical thickness guidelines:
- Residential driveway: 2-3 inches (5-7.5 cm)
- Parking lot: 3-4 inches (7.5-10 cm)
- Road surface: 4-6 inches (10-15 cm)
- Heavy traffic areas: 6+ inches (15+ cm)
Always order 5-10% extra to account for compaction, waste, and uneven sub-base.