As the largest reptile in the world, the adult male saltwater crocodile’s weight is 600 to 1,000 kilograms (1,300–2,200 lb) and length is normally 4.1 to 5.5 metres (13–18 ft), although mature males can be 6 metres (20 ft) or more and weigh 1,300 kilograms (2,900 lb) or larger.This species has the greatest sexual dimorphism of any modern crocodilian, with females being much smaller than males.