The normal size of a liver on an ultrasound ranges between 13 and 16 centimeters. When measured from the midhepatic line, the liver is no more than 16 centimeters. When measured from the midclavicular line, its size is no greater than 13cm, according to Ultrasoundpaedia.
The size of the liver is influenced by the weight, height, gender and body surface area of an individual. Liver measurements can help to determine whether there are underlying conditions, such as splenomegaly, hepatomegaly, abdominal aneurysms or renal impairments. Several measurements need to be taken over time, and the sizes compared, to rule out a presence of the conditions, claims Ultrasoundpaedia.