How big is a full grown great white shark?

A female ussually reaches between 13-17 feet (4-5.2 M) and 1100-2400 lbs (500-1100 KG) , larger ones reach 20 feet (6.1 M) and weight 4400 lbs (2000 KG) and occasanially 23 feet (7 M) and 7000 lbs (3200 KG)

Duh!