One hundred square feet at 3 inches is 0.93 yards. At 2,700 pounds per yard that is about 1.25 tons. A thicker blanket for larger stone is a deeper number in the depth box, not a different website. “Stone calculator” and “rock calculator” are broad searches. The job on this page is decorative rock. Crushed stone and pea gravel are gravel. A table of yard weights is yard weight.
FAQ
Does rock size change the tons?
It changes the depth you should spread, which changes the volume, which changes the tons. A 1 inch layer and a 3 inch layer of the same rock are not the same order. The weight per yard is still the density. The form starts at the TRORC crushed-stone and pebble figure, 2,700 pounds per yard. Round river rock can differ. Type the supplier’s number.
Is this the gravel calculator?
No. Gravel and crushed stone, including pea gravel, stay on that page. This page is for decorative rock where the depth follows the stone size.
Sources
- TRORC, pebbles and crushed stone 2,700 lb/yd³: 3/8 inch pebbles and crushed stone both listed at 2,700 pounds per cubic yard.