One tandem truckload — 20 tons at 3 in
Area covered (compacted): 1,103.45 sq ft
- Weight: 20 tons × 2,000 = 40,000 lb
- Volume: 40,000 lb ÷ 145 lb/ft³ = 275.86 ft³
- Thickness: 3 in ÷ 12 = 0.25 ft
- Area: 275.86 ft³ ÷ 0.25 ft = 1,103.45 sq ft
Asphalt Tons to Square Feet Converter
You have a tonnage — a delivery ticket, a supplier quote, or leftover from another job — and need to know what it paves. Enter tons and compacted thickness to get the covered area in square feet and yards, plus a thickness ladder so you can trade thickness against coverage instantly.
The Formula
Sq ft = (Tons × 2,000 ÷ Density lb/ft³) ÷ (Thickness in ÷ 12)
How the Calculation Runs
- Convert tons to pounds (× 2,000).
- Divide by density to get compacted volume in cubic feet.
- Convert thickness to feet (÷ 12).
- Divide volume by thickness to get covered area in square feet.
- The thickness ladder repeats step 4 at common lift thicknesses.
What Each Variable Means
| Symbol | Variable | Unit | Notes |
|---|---|---|---|
| W | Asphalt weight | US tons | Net delivered weight. If your ticket includes an allowance, that is fine — the area answer reflects it. |
| T | Compacted thickness | in | Finished thickness after rolling. |
| D | Density | lb/ft³ | Compacted mix density; planning default 145. |
| A | Covered area | sq ft | Volume ÷ thickness. |
Entering Your Numbers
- Asphalt (US tons)
- Compacted thickness (in)
- Density (lb/ft³) — Typical hot mix runs 142–148 lb/ft³. Use your supplier’s mix-design value when you have it.
Known Limitations
- Assumes the tonnage is compacted weight at the density entered. Recycled or porous mixes shift density — get the mix-design value from the plant.
- Coverage is net. Real-world yield drops slightly on ragged edges, trenches, and handwork; when ordering (not back-calculating), add an allowance with the square-feet-to-tons tool.
- Thin lifts under 1 in are rarely practical for asphalt paving; the ladder stops at values crews actually place.
Worked Examples
Every number below is produced by the same engine at build time — not typed by hand.
Leftover overlay material — 7.5 tons at 2 in
Area covered (compacted): 620.69 sq ft
- Weight: 7.5 tons × 2,000 = 15,000 lb
- Volume: 15,000 lb ÷ 145 lb/ft³ = 103.45 ft³
- Thickness: 2 in ÷ 12 = 0.1667 ft
- Area: 103.45 ft³ ÷ 0.1667 ft = 620.69 sq ft
Frequently Asked Questions
How many square feet does 1 ton of asphalt cover?
At 145 lb/ft³: about 55 sq ft at 3 in compacted, about 83 sq ft at 2 in, about 110 sq ft at 1.5 in, and about 41 sq ft at 4 in. Thicker pavement covers less area per ton.
How many square feet will 20 tons of asphalt cover?
At 3 in compacted and 145 lb/ft³, 20 tons covers roughly 1,103 sq ft — about a 20 × 55 ft driveway. Use the ladder above to see thinner and thicker options.
Is this the same as converting tons to cubic yards?
Related but different. Tons to cubic yards ignores thickness — 1 ton at 145 lb/ft³ is about 0.51 yd³. This tool goes one step further and turns that volume into paved area at your thickness.
Should I add waste allowance to the area result?
No — not in this direction. If you already hold the tonnage, the area shown is what it paves. Allowance matters when you are deciding how much to order; use the square-feet-to-tons converter for that.
Sources & Data Lineage
- FHWA Western Federal Lands Estimating Handbook — hot-mix asphalt density basis for the 145 lb/ft³ planning default. Reviewed 2026-09.
- Asphalt Institute — typical HMA density range 142–148 lb/ft³. Reviewed 2026-09. www.asphaltinstitute.org