The Asphalt Density Standard
Hot-mix asphalt (HMA) — the stuff that goes on driveways and roads — has a standard density of about 145 pounds per cubic foot. That's roughly 2 tons per cubic yard (3,915 lbs to be exact).
This density is what makes the conversion from area measurements (square yards or square feet) to weight (tons) possible.
Asphalt weighs about 145 lbs per cubic foot, or roughly 2 tons per cubic yard. At 2 inches thick, you'll need about 0.055 tons per square foot or 0.5 tons per square yard.
The Conversion Formula
There are two versions depending on whether you're measuring in square yards or square feet.
From Square Yards
That looks messy. Here's the simplified version:
From Square Feet
Simplified:
Quick Examples
Driveway: 500 sq ft at 2 inches thick
500 × 2 × 0.00604 = 6.04 tons
Parking lot: 1,000 sq yd at 3 inches thick
1,000 × 3 × 0.0489 = 146.7 tons
Get an Exact Number
Enter your area and thickness. The calculator handles the density conversion automatically.
Open Asphalt Calculator →Thickness Guide: How Thick Should Asphalt Be?
The right thickness depends on what the asphalt needs to support. Going too thin means cracks and potholes within a year. Going too thick wastes money.
| Application | Recommended Thickness | Notes |
|---|---|---|
| Walking path / bike trail | 1.5 – 2 inches | Light foot/bike traffic only |
| Residential driveway | 2 – 3 inches | Over a compacted gravel base |
| Heavy-use driveway | 3 – 4 inches | RVs, trailers, heavy trucks |
| Small parking lot | 2.5 – 3 inches | Passenger vehicles |
| Commercial parking lot | 3 – 4 inches | Daily heavy traffic |
| Road / highway overlay | 1.5 – 2 inches | Resurfacing over existing pavement |
| Full road construction | 4 – 6 inches | Multiple lifts (layers) |
Asphalt sits on top of a gravel/aggregate base. For driveways, you typically need 4-8 inches of compacted gravel under the asphalt. Without a good base, even thick asphalt will crack and shift.
Quick Tonnage Reference Table
Find your area size on the left, then look across to your asphalt thickness.
| Area (sq ft) | 1.5" Thick | 2" Thick | 3" Thick | 4" Thick |
|---|---|---|---|---|
| 200 | 1.8 tons | 2.4 tons | 3.6 tons | 4.8 tons |
| 500 | 4.5 tons | 6.0 tons | 9.1 tons | 12.1 tons |
| 1,000 | 9.1 tons | 12.1 tons | 18.1 tons | 24.2 tons |
| 2,000 | 18.1 tons | 24.2 tons | 36.3 tons | 48.3 tons |
| 5,000 | 45.3 tons | 60.4 tons | 90.6 tons | 120.8 tons |
| 10,000 | 90.6 tons | 120.8 tons | 181.3 tons | 241.7 tons |
Divide square feet by 9 to get square yards. For example, 1,000 sq ft = 111 sq yd. The tonnage is the same regardless of which unit you start with.
Real Project Examples
Standard Residential Driveway: 12 × 40 ft, 2.5 inches
- Area: 480 sq ft
- Tons: 480 × 2.5 × 0.00604 = 7.25 tons
- With 10% waste: 7.97 tons → Order 8 tons
Double Driveway: 20 × 40 ft, 3 inches
- Area: 800 sq ft
- Tons: 800 × 3 × 0.00604 = 14.50 tons
- With 10%: 15.95 tons → Order 16 tons
Small Parking Lot: 5,000 sq ft, 3 inches
- Area: 5,000 sq ft (≈556 sq yd)
- Tons: 5,000 × 3 × 0.00604 = 90.6 tons
- With 10%: 99.7 tons → Order 100 tons
Hot-mix asphalt typically costs $80-$150 per ton for the material, depending on your location and mix design. Installation adds $2-$5 per square foot on top of that. Always get at least three quotes from local contractors.
How Many Tons in a Cubic Yard of Asphalt?
If you already know your volume in cubic yards, the conversion is simple:
So 5 cubic yards of asphalt = 5 × 1.96 = 9.8 tons.
For the reverse: Tons ÷ 1.96 = Cubic Yards. 20 tons = 20 ÷ 1.96 = 10.2 cubic yards.
Use the Asphalt Calculator
Free Asphalt Square Yards Calculator
Enter your area and thickness to get tonnage, cubic yards, and cost estimates.
Calculate Asphalt Tonnage →Related Guides
- Cubic Yards to Tons — General conversion guide for all materials
- How Many Cubic Yards Do I Need? — Master volume guide
- Square Feet to Cubic Yards — Area + depth to volume conversion
- Asphalt Square Yards Calculator — Online tool
- Cubic Yards to Tons Calculator — General weight converter