The approximate weight of 1 cubic yard of sand is 2,600 to 3,000 pounds. This amount is also roughly equal to 1 1/2 tons.
A cubic yard of gravel will weigh slightly less, at roughly 2,400 to 2,900 pounds, or roughly still 1 1/2 tons. If covering a 2-inch depth, a cubic yard of sand should cover 100 square feet of ground. While 1 cubic yard of mulch will cover the same amount of ground at 100 square feet, it weighs significantly less, at 600 to 800 pounds per cubic yard. One cubic yard of dirt weighs approximately 2,000 pounds.