One cubic yard of 3/4-inch red crushed stone weighs 1.3 tons. Companies may sell the stone by ton or by cubic yard. One cubic yard covers about 10 feet by 10 feet for a depth of 3 inches and one ton covers about the same area at a 2-inch depth.
For landscaping purposes, a depth of at least 2 inches is preferred. Walkways require 3 inches, and a driveway may require up to 4 inches. Crushed stone also commonly comes in 3/8-inch and 1/2-inch sizes. Larger sizes allow for better drainage. Crushed stone can be used in place of any gravel of the same size.