How Many Tons of Asphalt per 1,000 Square Feet?

At 145 pounds per cubic foot, 1,000 square feet of compacted hot mix needs about 6.0 tons at one inch, 9.1 at 1.5, 12.1 at two, 18.1 at three, and 24.2 at four inches. Each figure is a planning estimate. The plant ticket is the real weight.

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One block of area at several thicknesses

People scale jobs from a round 1,000 square foot unit because the zeros are easy to multiply later. The planning formula is area times inches times 145, divided by 24,000. For 1,000 square feet that shortens to inches times 145, divided by 24. One inch is 145 divided by 24, about 6.0 tons. At 1.5 inches, 1.5 times that 6.0 is about 9.1 tons. Two inches is about 12.1 tons. Three inches is about 18.1 tons. Four inches is about 24.2 tons. The same chain is length times width times inches divided by 12, times 145, divided by 2,000, which is identical math. Write the thickness beside every tonnage. A 1,000 square foot note with no depth is not an order.

Scale the block up or down

A 500 square foot pad is half of the block, so half of 12.1 tons is about 6.0 tons at two inches. A 2,000 square foot area is double, about 24.2 tons at two inches, which happens to match 1,000 square feet at four inches because both are the same volume. That coincidence is useful as a check and dangerous as a mix-up. Do not swap thickness and area in the notes you send a plant. Irregular edges still need their own square feet added before you scale. This whole table is a planning estimate. The plant ticket is the real weight. If the plant publishes a density other than 145 pounds per cubic foot, rerun inches times that density divided by 24 for the 1,000 square foot block.

What 1,000 square feet does not decide

The unit does not tell you whether one inch or four inches is the right pavement. A thin number can be a leveling course. A thicker number can be a light truck pad. Soil, vehicles, and the base under the mix decide the section, and this page does not turn any of those thicknesses into a code requirement. Hand work can push the ticket above the neat tons, especially when 1,000 square feet is a long narrow walk of many edges rather than a compact pad. Order the tons for the thickness you will compact to, then keep the scale ticket. If the ticket is far from the table, measure the real area and the real average depth before you assume the load was wrong.

A practical sequence

Confirm the area is actually 1,000 square feet, or scale from that unit.
Multiply the thickness in inches by 145 and divide by 24.
Write the thickness next to the tonnage so the two stay paired.
Treat the table as a planning estimate and verify weight on the plant ticket.

The mistake to skip

Quoting a tonnage for 1,000 square feet without saying which thickness it belongs to.

Questions people ask

Why is the two-inch number about 12.1 and not 12?

Because 1,000 times 2 times 145 divided by 24,000 is 12.083, which rounds to about 12.1 tons. The 145-pound density and the exact fraction of a foot both leave a tenth. Use 12.1 for planning at two inches. The plant ticket is the real weight, and a different published density would change the tenth.

Can I use these tons for gravel?

No. These figures are for compacted hot mix at 145 pounds per cubic foot. Gravel is often planned near 1.4 tons per cubic yard, which is a different material and a different unit. Keep asphalt tons and base tons on separate lines, and let each ticket confirm its own weight.

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