This list of largest reptiles takes into consideration both body length and mass of large reptile species, including average ranges and maximum records. The crocodilians reaching a length of 4 m (13 ft) and a mass of 500 kg (1,100 lb) or more. It is worth mentioning that unlike the upper weight of mammals, birds or fish, mass in reptiles is frequently poorly documented, thus subject to conjecture and estimation.[1]
The saltwater crocodile is considered to be the largest extant reptile, verified at up to 6.32 m (20.7 ft) in length and around 1,000–1,500 kg (2,200–3,300 lb) in mass.[2] Larger specimens have been reported albeit not fully verified,[3] the maximum of which is purportedly 7 m (23 ft) long with an estimated mass of 2,000 kg (4,400 lb).[1]
The following table below lists the 15 largest extant reptile species ranked according to their average mass range, with maximum reported/reliable/estimated mass also being provided.