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Asphalt

Asphalt Calculator

Length × width × compacted thickness × density — reported in the tons your plant sells. Four mix densities built in, waste factor included.

145
lb/ft³ compacted hot mix
80 ft²
covered per ton @ 2 in
1.96
tons per cubic yard
~25%
loose-to-compacted fluff

Contents

  1. 1.The tonnage formula
  2. 2.Worked example: parking pad
  3. 3.Mistakes that blow asphalt orders
  4. 4.Density quick reference

The tonnage formula

Formula

Tons = Area (ft²) × (t ÷ 12) × 145 ÷ 2,000 × (1 + waste)

Area
length × width (ft²)
t
compacted thickness (inches)
145
compacted hot mix density (lb/ft³)
2,000
pounds per US ton

Metric: tonnes = m² × thickness (m) × 2.322. The full derivation is in the how-to-calculate guide.

The one asphalt-specific twist versus a concrete takeoff: the answer converts to weight, because plants batch and bill by the certified scale ticket. Everything upstream — measuring, unit conversion, waste — is the same discipline. If you only need the volume, the volume calculator skips the density step.

Worked example: parking pad

Worked example

A 30 × 18 ft parking pad, 4 in compacted hot mix, machine laid with simple edges.

  1. 1

    Area

    30 × 18 = 540 ft²

  2. 2

    Volume

    540 × (4 ÷ 12) = 180 ft³

  3. 3

    Weight

    180 × 145 = 26,100 lb

  4. 4

    Tons + 5% waste

    26,100 ÷ 2,000 × 1.05 = 13.7 tons

Result: Order 14 tons — one tandem truck plus a small top-up, so ask the plant to load 14 on one truck if legal in your state.

Mistakes that blow asphalt orders

Density quick reference

Tonnage lives and dies by density. Full tables — including millings and binder — in the density chart.

Typical values; the plant's mix design sheet (ASTM D2726) governs on paid work. Compare with concrete in the concrete density chart.
Materialkg/m³lb/ft³t/m³
Hot mix asphalt (compacted)145 lb/ft³ — the estimating standard2,3221452.32
Hot mix asphalt (loose, in truck)Fluffs ~20–25% before rolling1,870116.71.87
Warm mix asphalt (compacted)Same aggregates, lower placing temp2,300143.62.3
Cold mix / cold patch (compacted)Higher voids than hot mix2,200137.32.2
Asphalt millings (loose)RAP; compacts to ~1,9501,6501031.65

Frequently asked questions

Asphalt guides

How to Calculate AsphaltArea × depth × density — the full takeoff method.GuideAsphalt Density ChartUnit weights for hot mix, cold mix and millings.ChartAsphalt Coverage GuideWhat one ton covers at every thickness.GuideAsphalt Cost GuidePer-ton and installed pricing, fees included.GuideAsphalt Thickness GuideLift thickness by application, base to surface.GuideAsphalt vs ConcreteThe paving decision from asphalt's corner.ComparisonAsphalt FAQsThe questions every first-time paver asks.FAQ

More asphalt calculators

Asphalt Driveway CalculatorAsphalt Weight CalculatorAsphalt Cost CalculatorAsphalt Volume Calculator

Working in concrete too?

Sources & references

  1. [1]MS-4: The Asphalt Handbook, 7th ed. — Asphalt Institute, 2007
  2. [2]ASTM D2726: Bulk Specific Gravity of Compacted Asphalt Mixtures — ASTM International, 2021
  3. [3]Asphalt Pavement Design Guide (APD-1) — National Asphalt Pavement Association, 2020

Asphalt Calculator

Tons and cubic yards for any paving area. Uses compacted thickness — the thickness after rolling, which is what plans specify.

Driveways: 3 in total. Parking lots: 4 in+. Overlays: 1.5–2 in.