How to Convert Square Yards to Asphalt Tons

Multiply square yards by 9 to get square feet, then use the ton formula. Two hundred square yards is 1,800 square feet, and at two inches that is about 21.8 tons at 145 pounds per cubic foot. The plant ticket is the real weight.

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Yards become feet, then tons

A square-yard quantity is already an area. It is not a thickness and it is not a weight. Multiply square yards by 9 to get square feet, because each yard covers a three-by-three block. Then run the compacted hot-mix formula. Tons equal those square feet times inches divided by 12, times 145, divided by 2,000. Skipping the conversion and multiplying yards by a square-foot coverage will overstate the job by a factor of 9. Skipping it the other way, and dividing a square-foot sketch by a square-yard coverage, will understate it. Write the unit on the page. If the bid says square yards and the homeowner measured square feet, divide or multiply by 9 before you compare tons.

Two hundred square yards at two inches

Two hundred times 9 is 1,800 square feet. At two inches, 1,800 times 2 times 145 divided by 24,000 equals 522,000 divided by 24,000, which is 21.75, or about 21.8 tons. At three inches the same area would be about 32.6 tons, because 21.75 times 1.5 is 32.625. The thickness change is the whole story. The square yards did not move. This is a planning estimate at 145 pounds per cubic foot. The plant ticket is the real weight. If a proposal lists 200 square yards and a second note lists 1,800 square feet, they are the same area and should produce the same tons at the same depth. If they do not, one of the thicknesses is different.

Compare quotes without mixing units

Lay the two documents side by side and circle area, unit, and thickness. Convert both areas to square feet. Convert both thicknesses to inches. Only then compute tons. A lower square-yard price is not a smaller asphalt quantity, and this page does not invent prices anyway. Quantity is tons at a stated density and depth. Hand work, waste, and a thicker average in the ruts can make the ticket higher than 21.8 on that 200 yard example. A large open pad runs closer to the formula than a chopped-up driveway. Ask the plant to confirm density if the mix is not the 145-pound planning default. Keep every ticket until the measured area and the tons tell the same story.

A practical sequence

Multiply square yards by 9 to get square feet.
Multiply those square feet by inches, then by 145, and divide by 24,000.
Use the same thickness when you compare a yard bid with a foot sketch.
Treat the tons as a planning estimate and read the real weight on the plant ticket.

The mistake to skip

Multiplying square yards by the square-foot coverage per ton and calling that an order.

Questions people ask

How many tons is 200 square yards at two inches?

About 21.8 tons. Two hundred square yards is 1,800 square feet. Then 1,800 times 2 times 145 divided by 24,000 equals 21.75, stated as about 21.8. That is a planning estimate at 145 pounds per cubic foot of compacted hot mix. The plant ticket is the real weight.

What if my sketch is in square feet?

Divide square feet by 9 if you need to speak in square yards, or multiply square yards by 9 if you need feet. Do that before you compute tons, and keep the thickness the same on both sides. A unit mix-up looks like a huge tonnage error even when the pavement area is correct.

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