Asphalt Calculator
Estimate how much asphalt you need for your driveway, parking lot, or paving project
Calculate Your Asphalt Needs
Measurement Units
Imperial
Metric
Asphalt Paving Information
Standard Asphalt Density
Hot mix asphalt typically weighs about 145 lbs per cubic foot (2322 kg/m³). This calculator uses this standard value for weight estimates.
Typical Thickness Guidelines
- • Residential driveways: 2-3 inches (5-7.5 cm)
- • Parking lots: 3-4 inches (7.5-10 cm)
- • Roadways: 4-6 inches (10-15 cm)
Average Costs (2023)
- • Asphalt: $100-$200 per ton
- • Installation: $3-$5 per square foot
Frequently Asked Questions
How much asphalt do I need for a 12×20 driveway?
A 12×20 foot driveway at 3 inches thick requires about 2.22 cubic yards (3 tons) of asphalt. Use our calculator above for precise measurements.
How do I calculate asphalt tonnage?
First calculate volume (length × width × thickness), convert to cubic yards, then multiply by 2.025 to get tons (for standard hot mix asphalt).
How thick should asphalt be?
Residential driveways typically need 2-3 inches, while commercial parking lots require 3-4 inches. Heavy traffic areas may need 6+ inches.