Gorillas vary significantly in weight by species, sex, and whether they're wild or captive. Adult males, especially silverbacks, are much heavier than females, with eastern gorillas often the largest. Weights are typically reported in kilograms or pounds from wildlife studies.

Male Gorilla Weights

Male gorillas dominate with impressive bulk for protection and foraging.

  • Western gorillas : 140-180 kg (310-400 lbs); rare over 200 kg in the wild.
  • Mountain gorillas : 150-220 kg (330-485 lbs), averaging 150-160 kg.
  • Eastern lowland (Grauer's) : Up to 200+ kg (440+ lbs), heaviest recorded near 267 kg (588 lbs).
  • Silverbacks generally : 135-195 kg (300-430 lbs), standing 1.5-1.8 m tall.

Captive males can exceed 230 kg due to richer diets, unlike leaner wild ones.

Female Gorilla Weights

Females are roughly half the size, aiding agility in troops.

Species| Weight Range| Notes 159
---|---|---
Western Lowland| 70-110 kg (155-245 lbs)| Smaller frame
Mountain| 90-120 kg (200-265 lbs)| Up to 113 kg avg
Eastern Lowland| 90-120 kg (200-265 lbs)| Similar to mountain
Cross River| 70-90 kg (155-200 lbs)| Rarest, lightest females

Key Influences on Weight

Gorilla mass isn't uniform—here's what shapes it.

  • Diet : Wild herbivores bulk on foliage (up to 30 kg daily); zoos add calories for 20-50% more weight.
  • Species & Habitat: Eastern types edge out western in size; altitude affects mountain builds.
  • Age & Status: Peaks at 15-20 years for silverbacks with sagittal crests.
  • Records : Heaviest ever ~267 kg; 800-lb myths exaggerate (real max ~500 lbs).

TL;DR: Wild adult male gorillas weigh 135-220 kg (300-485 lbs); females 70-120 kg (155-265 lbs). Check subspecies for precision.

Information gathered from public forums or data available on the internet and portrayed here.