Gorilla weight varies by species and sex. Adult male gorillas, known as silverbacks, typically weigh between 300 to 485 pounds (135 to 220 kg), with some males reaching up to 500 pounds (227 kg) or more. Western lowland gorillas generally weigh between 300 to 400 pounds (135 to 180 kg), while mountain gorillas are larger, weighing between 350 to 485 pounds (160 to 220 kg). Females are smaller, weighing around 150 to 250 pounds (68 to 113 kg) depending on the species. In captivity, males can weigh even more, sometimes reaching up to 310 kg (683 pounds) due to excess weight. Overall, gorillas are the largest living primates, with adult males standing around 1.4 to 1.8 meters tall and females being shorter.