Organ mass of the liver---Prof Itaru Kojima

http://hepato.umin.jp/kouryu/kouryu20.html

小島教授　群馬大学

The mass of a healthy human liver is approximately 1.2–1.5 kg (2.4–3.0 lb). The liver's mass comprises one-fortieth to one-fiftieth of a total adult body's weight and one-eighteenth of the body's weight during infancy.

The liver is the only human internal organ capable of natural regeneration of lost tissue; as little as 25% of a liver can regenerate into a whole liver.