A silverback gorilla, which is a mature adult male gorilla, typically weighs between 135 to 195 kilograms (300 to 430 pounds) and stands about 1.5 to 1.8 meters tall (4 feet 11 inches to 5 feet 11 inches) in height. Their arm span ranges from approximately 2.3 to 2.6 meters (7 feet 7 inches to 8 feet 6 inches)

. Some sources note that silverbacks can weigh up to around 270 kilograms (about 600 pounds) in the wild, with heights reaching up to 1.8 meters (5 feet 11 inches) or slightly more, and exceptional individuals recorded even taller and heavier

. They are the largest living primates and are known for their impressive strength, being at least seven to eighteen times stronger than an average adult human male

. In summary:

• Weight: 135–195 kg (300–430 lbs), sometimes up to 270 kg (600 lbs)
• Height: 1.5–1.8 m (4 ft 11 in – 5 ft 11 in)
• Arm span: 2.3–2.6 m (7 ft 7 in – 8 ft 6 in)
• Strength: 7 to 18 times stronger than an adult human male

This size and strength make silverback gorillas the dominant males and leaders within their groups