Answer
Apr 27, 2026 - 12:23 PM
A 3-foot (about 0.91 meter) granite boulder is very heavy. Granite weighs approximately 165 pounds per cubic foot, so a spherical boulder with a 3-foot diameter would weigh roughly 2,300 to 2,500 pounds (about 1,040 to 1,130 kilograms). The exact weight can vary depending on the shape and density of the granite.
