How much does King Kong weigh?

King Kong appears to be a giant mountain gorilla. In real life, male mountain gorillas average 195 kg (430 lb) and an upright standing height of 150 cm (59 in). The 2005 movie version was said to be "25 feet" (300 in) in height. Since mass grows exponentially compared to height (because width and depth are also growing), a 25-foot mountain gorilla with the same proportions as a regular-sized one would be around 25.6 metric tonnes (28.3 short tons).

Note, however, that most fan sites list Kong's weight as being in the 6-10 ton range. (For comparison, a large T-rex may have reached up to about 8 tons.) This indicates that Kong's biology is not simply a scaled-up version of a mountain gorilla. Instead, it appears that his species has made some evolutionary adaptations as it has grown to magnificent proportions. While these differences are not readily apparent on the outside, they have given him the mobility and the edge he needs to fill an ecological niche on Skull Island.