Before you use the result
Asphalt is normally ordered by weight, but paving areas are measured by length and width, square feet, or square yards. This asphalt calculator turns area and finished compacted thickness into volume, then multiplies by an editable compacted density to estimate US tons and metric tonnes.
Choose Quantity needed when you know dimensions or total area, Area covered when you already know the available tonnage, or Convert a takeoff to move between square yards, cubic yards, US tons, and metric tonnes. Results keep the theoretical material quantity separate from your order allowance and supplier rounding.
Use the estimate to plan a hot-mix asphalt order or ask better questions about a contractor's material quantity. Uneven grade, variable milling depth, transitions, handwork, mix density, plant minimums, and legal payload can change actual delivery and yield, so this is a documented planning calculation rather than an exact order or pavement design.
Need the math explained first? See how to calculate asphalt tons from square feet or square yards. To choose and document the unit-weight assumption, read hot-mix asphalt density and weight conversions.
Transparent assumptions
How this calculator works
Area and compacted volume: enter a known area in ft², yd², m², or acres, or build it from rectangular and circular sections. Area × finished compacted thickness gives compacted volume.
Hot-mix asphalt tonnage: compacted volume × density gives weight. The default 145.2 lb/ft³ is an FHWA estimating value for hot asphalt mix, not a guaranteed density for every mix. Replace it with the plant or job-mix value when available.
Multiple asphalt lifts: surface, binder, asphalt base, or custom lifts can carry separate compacted thickness and density assumptions. The calculator totals each lift without adding aggregate base or other materials to asphalt tonnage.
Coverage and conversions: reverse mode answers how many square feet or square yards a known tonnage can cover. The takeoff converter handles area-to-tons, tons-to-area, compacted cubic yards-to-tons, and US-ton-to-metric-tonne workflows.
Order and quote planning: the result separates calculated tons, your chosen allowance, full and partial truckloads, optional material-only cost, and an entered quote comparison. A difference is a question to clarify—not proof that a bid is wrong.
Formula used
- Compacted cubic feet = Area (ft²) × (Compacted thickness in ÷ 12)
- US tons = Compacted ft³ × Density (lb/ft³) ÷ 2,000
- Planning order = Theoretical tons × (1 + Order allowance % ÷ 100)
- Coverage ft²/ton = 2,000 × 12 ÷ Density ÷ Compacted thickness in
- lb/yd²/in = Density (lb/ft³) × 9 ÷ 12
Quick reference
Hot-mix asphalt tonnage and coverage by thickness
Calculated at the page's 145.2 lb/ft³ FHWA estimating density. Actual mix density changes every value; use the live calculator with supplier data when available.
| Finished compacted thickness | Tons per 1,000 ft² | Ft² per ton | Yd² per ton |
|---|---|---|---|
| 1.5 inches | 9.1 tons | 110.2 ft² | 12.2 yd² |
| 2 inches | 12.1 tons | 82.6 ft² | 9.2 yd² |
| 2.5 inches | 15.1 tons | 66.1 ft² | 7.3 yd² |
| 3 inches | 18.2 tons | 55.1 ft² | 6.1 yd² |
| 4 inches | 24.2 tons | 41.3 ft² | 4.6 yd² |
Frequently asked questions
How do I calculate asphalt tonnage from square feet?
Multiply the area in square feet by the finished compacted thickness in feet to get cubic feet. Multiply that volume by asphalt density in pounds per cubic foot, then divide by 2,000 pounds per US ton. Add an order allowance separately so theoretical tonnage and the planning order remain clear.
How do I convert square yards of asphalt to tons?
Multiply square yards by 9 to get square feet, multiply by the finished compacted thickness in feet, and multiply by compacted density. Divide the resulting pounds by 2,000 to get US tons. Because thickness and density change the answer, square yards alone cannot be converted to tons.
How many square feet does one ton of asphalt cover?
At the calculator's 145.2 lb/ft³ planning density, one US ton covers about 82.6 square feet at 2 inches, 55.1 square feet at 3 inches, or 41.3 square feet at 4 inches compacted. Density and thickness both change coverage, so use Area covered mode for your assumptions.
How many cubic yards are in a ton of asphalt?
At 145.2 lb/ft³, one compacted cubic yard weighs about 1.96 US tons, so one US ton is about 0.51 compacted cubic yard. This is a density-based conversion rather than a universal constant; change the density to match the supplier's mix information.
Should I enter loose or compacted asphalt thickness?
Enter the finished compacted thickness. Loose placement depth is greater and varies with the mix and compaction process. If a proposal does not identify whether a thickness is loose or compacted, ask the contractor rather than applying an unexplained universal conversion factor.
What density should I use in an asphalt calculator?
The default 145.2 lb/ft³ is an FHWA estimating value for hot asphalt mix. It is not the exact density of every mix. If the asphalt plant or job-mix formula provides a compacted unit weight, enter that value for a more relevant estimate and keep it with the saved worksheet.
Does this asphalt calculator include aggregate base or demolition?
No. It estimates hot-mix asphalt material only. Aggregate base, excavation, milling, demolition, tack coat, drainage, labor, equipment, and hauling charges are separate project items.
Can this asphalt calculator estimate cost or check a quote?
You can enter your own material price per ton for a material-only subtotal and compare a quoted tonnage with the documented planning order. Tonnage alone cannot produce a reliable installed price because hauling, minimum loads, labor, equipment, base work, access, demolition, and regional conditions vary. Use the dedicated driveway cost calculator for broader budgeting.
How much extra asphalt should I order?
There is no single allowance that fits every project. Measurement uncertainty, irregular edges, variable grade, leveling, handwork, plant minimums, and truck rounding can affect the order. Choose and document an allowance, then confirm the final quantity with the asphalt plant or paving contractor.
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