The conversion
Estimated short tons = cubic yards × short tons per cubic yard. If a supplier gives pounds per cubic yard, divide that figure by 2,000 first. Keep the supplier's moisture and compaction assumptions in mind.
Start with the space, then convert
Measure the area in square feet and choose the placed layer depth in inches. Multiply area by depth and divide by 12 to get cubic feet; divide by 27 to get cubic yards. Work out separate layers independently when a path or driveway uses different base and surface materials.
Example: a 20 × 10 ft path at 3 in deep
The area is 200 ft². At 3 in (0.25 ft) deep, the geometric volume is 50 ft³, or about 1.85 yd³. Suppose your supplier confirms that its specific gravel is 1.4 short tons per cubic yard. The estimated weight is 1.85 × 1.4, or about 2.59 short tons, before any extra allowance or order rounding. The 1.4 figure is only an example; enter the density for your product.
Turn the estimate into an order
Check whether the quote is per cubic yard or per short ton, along with its minimum order, increments, delivery fee, and any other charges. A 1.85 yd³ requirement becomes a 2 yd³ order if a supplier sells in half-yard increments with no higher minimum. A short-ton quote needs a confirmed density before you can compare its delivered cost with a yard quote.
Why the weight can vary
Different rock types, particle sizes, void space, and moisture can change the weight of the same volume. Compaction can also change the quantity needed to reach a planned finished depth. This guide gives a purchasing estimate, not a guaranteed delivered weight or compacted yield. Confirm the material and conversion with the seller.
Use the gravel calculator to enter your dimensions, your supplier's density, and the actual quotes. Review the calculation method if you want to check the unit conversions and rounding.