Construction

Asphalt Calculator

Estimate the tons of hot-mix asphalt for a driveway or lot.

Length

Width

Thickness

Density (lb/ft³)

Price per ton ($)

Calculated Output

Asphalt needed 7.25

Volume 3.704

Total cost ($) 0

Formula: tons = L × W × (thickness/12) × density ÷ 2000

Step-by-Step Breakdown

1. Values used:

2. Length = 40

3. Width = 10

4. Thickness = 3

5. Density = 145 lb/ft³

6. Price per ton = 0 $

8. Asphalt needed = 7.25

9. Volume = 3.704

10. Total cost = 0$

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The math behind it

Volume (ft³) = length × width × thickness (converted to feet).

Compacted asphalt weighs about 145 lb/ft³ (~2 tons per cubic yard). Tons = volume × density ÷ 2,000.

40×10 ft at 3 in → 100 ft³ × 145 = 14,500 lb = 7.25 tons.

How thick should an asphalt driveway be?

Residential: ~2–3 in of asphalt over a 4–8 in stone base.