Asphalt Calculator
Calculate asphalt quantities for your paving project.
Calculation Results
Free Pavement Calculator for Roads & Parking Lots
Calculate asphalt pavement material requirements for construction projects. Supports multiple layers and thickness specifications.
Road Construction
Parking Lots
Layer Breakdown
Asphalt Pavement Design Guide
Pavement Structure Layers
Surface Course (Wearing Layer)
1.5-2" (40-50mm) - Smooth, dense asphalt for traffic
Binder Course (Intermediate)
2-4" (50-100mm) - Coarser asphalt for load distribution
Base Course
4-8" (100-200mm) - Crushed aggregate for stability
Sub-base (Optional)
4-6" - Granular material for drainage
Subgrade (Prepared Soil)
Compacted native soil foundation
Recommended Pavement Thickness by Application
Residential Driveway Light vehicles only
2-3" asphalt + 4" base Parking Lot (Cars) Regular traffic
3-4" asphalt + 6" base Commercial/Industrial Trucks & heavy loads
4-6" asphalt + 8" base Highway/Major Road High volume, heavy traffic
6"+ asphalt + 12" base Pavement Calculation Formula
Asphalt (tons) = Length (ft) × Width (ft) × Thickness (in) ÷ 12 × Density (lb/ft³) ÷ 2000
Standard density: 145-150 lb/ft³ (2,320-2,400 kg/m³). Our calculator handles all unit conversions automatically.