Asphalt Square Feet to Tons Converter

Enter the area you measured and the finished thickness you are paving to. The converter returns net tonnage, a recommended order quantity with allowance, truckloads, and material cost if you enter your plant price — all from the same engine that powers our main asphalt calculator, with every step shown.

Asphalt to order

19.03 US tons

Net asphalt: 18.13 tons
Metric equivalent: 16.44 t
Compacted volume: 9.26 yd³
Truckloads: 1 × 20 t (last 19.03 t)
Material cost: —
Reverse check: 1,000 sq ft

Net tons at other thicknesses — same 1,000 sq ft, 145 lb/ft³
Compacted thickness	Net tons	Order tons (+allowance)
1 in	6.04	6.34
1.5 in	9.06	9.52
2 in	12.08	12.69
2.5 in	15.1	15.86
3 in	18.13	19.03
4 in	24.17	25.38

How this was calculated

Area1,000 sq ft (entered directly)1,000 sq ft
Thickness3 in ÷ 120.25 ft
Volume1,000 sq ft × 0.25 ft250 ft³
Weight250 ft³ × 145 lb/ft³36,250 lb
Net tons36,250 lb ÷ 2,00018.13 US tons
Order allowance+5%+0.91 tons
Order quantity18.13 tons × (1 + 0.05)19.03 tons
Truckloads19.03 tons ÷ 20-ton truck (round up)1 load, final load 19.03 tons

Thickness input is the finished compacted thickness, not loose thickness.
Density used: 145 lb/ft³ — planning default; source: FHWA Western Federal Lands Estimating Handbook (2026-09).
Order allowance 5% covers measurement error, edges, cuts, and site losses. It is separate from compaction and is applied only once.
Truck capacity 20 tons is a planning estimate; actual payload limits and supplier minimums vary by location and vehicle.
Planning estimate, not engineering design. Verify quantities and legal load limits with your supplier and local authority before ordering.

The Formula

Net tons = (Area sq ft × Thickness in ÷ 12) × Density lb/ft³ ÷ 2,000 • Order tons = Net tons × (1 + Allowance %)

How the Calculation Runs

Convert thickness from inches to feet (divide by 12).
Multiply area × thickness to get compacted volume in cubic feet.
Multiply volume × density to get net weight in pounds.
Divide by 2,000 to get net US tons.
Apply the order allowance once to get the recommended order quantity.
If a truck capacity is set, divide order tons by capacity and round up; the final load carries the remainder.
If a price is entered, multiply order tons by price per ton for material cost.

What Each Variable Means

Symbol	Variable	Unit	Notes
A	Area	sq ft	Finished paved area, measured after deducting openings you will not pave.
T	Compacted thickness	in	Thickness after rolling — not the loose mat. See the compaction tool before converting loose thickness.
D	Density	lb/ft³	Compacted mix density. Planning default 145; typical HMA 142–148.
W	Net weight	US tons	A ÷ 2,000 lb per ton after volume × density.
AL	Order allowance	%	Applied once, after net tonnage. Separate from compaction.

Entering Your Numbers

Total area (sq ft)
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.
Order allowance — Covers edges, cuts, and measurement error. Not a compaction factor.
Truck capacity (tons) — Leave blank to skip truckloads.
Your price per ton ($) — Optional — material-only, as quoted by your plant.

Known Limitations

Thickness must be the compacted (finished) thickness. Loose mat thickness converts first — use the compaction calculator, then bring the compacted number here.
Density varies by mix design and compaction achieved. A 3 lb/ft³ error moves tonnage about 2%.
Allowance is a planning buffer for edges, cuts, and measurement error. It is not a substitute for a takeoff on irregular sites — split those into shapes with the multi-area calculator.
Truck capacities are planning figures. Legal payloads follow the FHWA bridge formula and state rules, and suppliers often set minimum deliveries.

Worked Examples

Every number below is produced by the same engine at build time — not typed by hand.

Two-car driveway, 1,000 sq ft at 3 in

Asphalt to order: 19.03 US tons

Area: 1,000 sq ft (entered directly) = 1,000 sq ft
Thickness: 3 in ÷ 12 = 0.25 ft
Volume: 1,000 sq ft × 0.25 ft = 250 ft³
Weight: 250 ft³ × 145 lb/ft³ = 36,250 lb
Net tons: 36,250 lb ÷ 2,000 = 18.13 US tons
Order allowance: +5% = +0.91 tons
Order quantity: 18.13 tons × (1 + 0.05) = 19.03 tons
Truckloads: 19.03 tons ÷ 20-ton truck (round up) = 1 load, final load 19.03 tons

Parking-lot overlay, 2,400 sq ft at 2 in

Asphalt to order: 31.03 US tons

Area: 2,400 sq ft (entered directly) = 2,400 sq ft
Thickness: 2 in ÷ 12 = 0.1667 ft
Volume: 2,400 sq ft × 0.1667 ft = 400 ft³
Weight: 400 ft³ × 145 lb/ft³ = 58,000 lb
Net tons: 58,000 lb ÷ 2,000 = 29 US tons
Order allowance: +7% = +2.03 tons
Order quantity: 29 tons × (1 + 0.07) = 31.03 tons
Truckloads: 31.03 tons ÷ 25-ton truck (round up) = 2 loads, final load 6.03 tons

Frequently Asked Questions

How do I convert square feet of asphalt to tons?

Multiply area (sq ft) × thickness (inches) ÷ 12 to get cubic feet, multiply by density in lb/ft³, then divide by 2,000. At the 145 lb/ft³ planning default and 3 in compacted, every 1,000 sq ft is about 18.1 net tons.

How many tons of asphalt do I need for a driveway?

Measure length × width in feet for the paved area, pick your compacted thickness (3 in is common for passenger cars, 4 in for RVs and heavy pickups), and let the calculator apply your allowance. A 20 × 50 ft driveway at 3 in orders roughly 19 tons with 5% allowance.

Is the order allowance the same as compaction?

No. Compaction happens inside the thickness you enter — a 3 in compacted lift was laid looser and rolled down. Allowance covers waste, edges, and measurement error, and is applied exactly once, after net tonnage. Stacking both would double-count.

What density should I use?

Start with 145 lb/ft³, the FHWA-handbook-based planning default. Typical dense-graded HMA runs 142–148 lb/ft³ (Asphalt Institute). Ask your plant for the mix-design density — it beats any default.

Do these numbers work in metric?

The result grid shows metric tonnes (1 US ton = 0.907 t). For area in square meters, convert first: 1 sq m = 10.764 sq ft.

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