You can easily hold your head up, so your brain must not be that heavy. Which of these objects is about the same weight as the adult human brain?

The average adult human brain weighs 3 pounds, or about the same as a half-gallon of milk. The cerebrum makes up 85% of the brain's weight, and the brain overall is only about 2% of a human's body weight. The heaviest healthy human brain weighed almost 4 1/2 pounds.

Asked by Tom Cohen · Last updated 5 years ago · 2.3K views