Crushed stone density
Crushed stone weighs about <strong>1.5 tons per cubic yard</strong> (1.35–1.6 depending on size and moisture), heavier than loose gravel because the angular faces pack tighter. That's the conversion the calculator applies — and the number quarries quote, since stone is sold by weight.
Match the stone to the job
¾-inch (#57) is the all-purpose drainage and base stone; crusher run with fines compacts into driveways; rip-rap (basketball-sized) armors drainage ditches. Depth drives everything: 2 inches for decorative, 4 for a walkway base, 6 for a patio base in two lifts. Enter your intended compacted depth and order 10% over.