How to Calculate Asphalt
What is Asphalt?
Asphalt Quantity Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.
Formula
Tons = Area (sf) × Thickness (inches) / 12 × 145 lbs/cf / 2000
Step-by-Step Guide
- 1Calculate paved area, multiply by thickness factor and unit weight
- 2Apply the formula using your project measurements
- 3Add required safety factors or waste allowances per code
Worked Examples
Input
1000 sf driveway, 3 inch asphalt
Result
Tons = 1000 × 3/12 × 145/2000 = 18.1 tons
Common Mistakes to Avoid
- ✕Not applying code-required safety factors or derating
- ✕Forgetting to account for waste and cut losses in material estimates
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