Asphalt Calculator Guide
Understanding Asphalt Calculations
Asphalt (or "blacktop") is sold by weight (tons), not just volume. Because it is a dense mixture of stone, sand, and bitumen, calculating the exact tonnage requires knowing the density of the specific mix you are using.
The Formula
Volume (cu. ft.) = Length (ft) × Width (ft) × Depth (ft)
Weight (lbs) = Volume × Density (lbs/cu. ft.)
Tons Needed = Weight (lbs) / 2,000
Standard hot-mix asphalt typically weighs about 145-150 lbs per cubic foot.
Hot Mix vs. Cold Patch
Hot Mix Asphalt
Delivered hot (300°F+) by truck. Must be installed and compacted immediately.
- Best for: Driveways, parking lots, roads
- Durable and long-lasting
- Requires professional equipment
Cold Patch
Sold in bags. Remains soft until compacted.
- Best for: Pothole repairs, small cracks
- DIY friendly
- Not for large areas