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🛣️ Asphalt Paving Calculator

Calculate asphalt tonnage needed for driveways, parking lots, and road paving.

Quick Formula​

Volume Method​

Volume (CY) = (Length × Width × Depth) ÷ 27
Tons = Volume × Weight per CY

Area Method​

Area = Length × Width
Tons = (Area × Depth × Weight per CF) ÷ 2,000

Asphalt Weight​

DepthWeight per Square YardWeight per Square Foot
2"220-240 lbs24-27 lbs
3"330-360 lbs37-40 lbs
4"440-480 lbs49-53 lbs

Weight per cubic yard: ~2,400-2,700 lbs (1.2-1.35 tons)

Common Calculations​

Example 1: Driveway​

Driveway: 20' × 12' = 240 sq ft Depth: 3 inches

Calculation:

  • Area: 240 sq ft
  • Weight per sq ft @ 3": ~38 lbs
  • Total weight: 240 × 38 = 9,120 lbs
  • Tons: 9,120 ÷ 2,000 = 4.56 tons

Example 2: Parking Lot​

Parking lot: 100' × 50' = 5,000 sq ft Depth: 4 inches

Calculation:

  • Area: 5,000 sq ft
  • Weight per sq ft @ 4": ~51 lbs
  • Total weight: 5,000 × 51 = 255,000 lbs
  • Tons: 255,000 ÷ 2,000 = 127.5 tons

Base Material​

Crushed Stone Base​

Typically 4-6 inches of base material:

Base Volume = Area × Base Depth ÷ 27
Base Tons = Base Volume × 1.35 (crushed stone weight)

Compaction​

Add 5-10% for compaction:

Adjusted Tons = Base Tons × 1.05-1.10
Order Right

Asphalt is expensive. Order accurately - too much costs money, too little delays the project and may result in color variations.