how big is a full grown silverback gorilla

A fully grown silverback gorilla is roughly the size of a very heavy, muscular adult human football lineman, scaled up again.

Quick Scoop: Basic Size

• Height (standing upright): about 5.5 to 6 feet tall (around 1.7 to 1.8 meters).

• Weight: typically around 300 to 500 pounds (about 135 to 220 kilograms), depending on subspecies and whether it’s wild or in captivity.

• Arm span: roughly 7 to 8.5 feet (about 2.3 to 2.6 meters) from fingertip to fingertip, much longer than a human of similar height.

Think of someone about average male height, but with nearly double the weight in solid muscle and arms that reach well past the knees.