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Asphalt · Coverage Guide

What one ton of asphalt covers

Coverage is the bridge between the plant's unit (tons) and yours (square feet). One number to memorize — 80 ft² per ton at 2 inches — and two tables for everything else.

Coverage per ton

Compacted hot mix at 145 lb/ft³, with a small practical allowance built in. Halve the thickness, double the coverage.
Compacted thicknessTypical useCoverage per ton
1 inThin overlay, leveling course160 ft²
1.5 inSurface course over binder107 ft²
2 inOverlays, paths80 ft²The benchmark figure
3 inResidential driveways (over 6 in base)53 ft²
4 inParking lots, heavier drives40 ft²
6 inStreets, full-depth structure27 ft²

Concrete coverage works the same way but is quoted per cubic yard instead of per ton — the concrete coverage guide has those tables if you are comparing pavements.

Coverage per truckload

Based on a 14-ton legal tandem payload. Tri-axles haul 16–18 tons; small single-axles 6–8. Ask the plant what they dispatch.
Compacted thicknessTandem load (14 tons)What that means
1 in2,240 ft²A tennis court, twice
1.5 in1,500 ft²Large 3-car driveway overlay
2 in1,120 ft²Two average driveways
3 in745 ft²One 12 × 60 ft driveway, with margin
4 in560 ft²Small commercial apron
6 in378 ft²A truck-yard patch

The coverage formula

Formula

Coverage (ft²/ton) = 2,000 ÷ (145 × t ÷ 12)

2,000
pounds per US ton
145
compacted HMA density (lb/ft³)
t
compacted thickness (inches)

At t = 2: 2,000 ÷ 24.2 = 82.8 ft², quoted as 80 with allowance. The table values round the same way.

Worked example: sizing an order from coverage

Worked example

A 24 × 36 ft parking pad, 4 in compacted hot mix over an existing sound base.

  1. 1

    Area

    24 × 36 = 864 ft²

  2. 2

    Coverage at 4 in

    40 ft² per ton

  3. 3

    Tonnage

    864 ÷ 40 = 21.6 tons

  4. 4

    Waste at 5%

    21.6 × 1.05 = 22.7 tons

Result: Order 23 tons — a tri-axle (17 t) plus a small second load, or two tandems with a little left for the approach.

Frequently asked questions

Get your exact tonnage

The calculator runs the coverage math for any area, thickness and waste factor.

Open the Asphalt Calculator

Keep reading

Sources & references

  1. [1]MS-4: The Asphalt Handbook, 7th ed. Asphalt Institute, 2007
  2. [2]Asphalt Pavement Design Guide (APD-1) National Asphalt Pavement Association, 2020