size and weight of a human brain
The adult human brain weighs on average about 1.5 kg (3.3 lb) with a volume of around 1130 cubic centimetres cm 3 in women and 1260 cm 3 in men, although there is substantial individual variation.n elephant 's brain weighs just over 5 kg (11 lb), a bottlenose dolphin 's 1.5 to 1.7 kg (3.3 to 3.7 lb), whereas a human brain is around 1.3 to 1.5 kg (2.9 to 3.3 lb). Brain size tends to vary according to body size.