Dimensions
| Measurement | Metric | Imperial | Notes | Source |
|---|---|---|---|---|
| Length (average large adult) | 4.9–6.1 m | 16–20 ft | Average length given by San Diego Zoo (5 to 6 m), total length nose to tail. Range: varies | [1] |
| Length (adult male, normal maximum) | up to 6 m | up to 20 ft | Males normally grow up to 6 m. Maximum | [2] |
| Maximum length | up to 7 m | up to 23 ft | Maximum length given by San Diego Zoo (7 m); the IUCN Crocodile Specialist Group cites reported lengths of up to 6-7 m. Maximum | [1] [4] |
| Length (adult female) | 3 m | 9 ft 10 in | In Australia females rarely exceed 3 m total length; in Sarawak and Sabah (Malaysia) females up to 4 m are relatively common. Approximate | [4] |
| Mass | ≈ 910 kg | ≈ 2,000 lb | Weight given by San Diego Zoo (908 kg) alongside the 16 to 20 ft average length. Approximate | [1] |
| Mass (large male) | at least 1,000 kg | at least 1.1 US tons | Large males can weigh more than 1,000 kg. Approximate | [3] |
| Mass (adult female) | up to 150 kg | up to 330 lb | Females are usually around 3 m long and weigh up to 150 kg. Maximum | [3] |
About the saltwater crocodile
The saltwater crocodile is the largest living reptile and ranges from India and Sri Lanka through Southeast Asia to northern Australia and the Solomon Islands. Males grow far larger than females: the Northern Territory Government says males normally reach up to 6 m while females normally grow to a little over 3 m. San Diego Zoo Wildlife Alliance gives an average length of 16 to 20 ft and a weight of about 2,000 lb.
- Large males can exceed six metres in length and weigh more than 1,000 kg, while females are usually around three metres long. [3]
- Crocodiles of up to 10 m were recorded in the wild in the past, but such sizes are extremely rare. [2]
- An average hatchling weighs 72 g and is 29.3 cm long; females mature at around 2.3 m and males at around 3.3 m. [2]
- It is one of the most widely distributed crocodilians, found from southern India and Sri Lanka east to Micronesia and south to northern Australia. [4]
How many fit?
- ≈ 2.8–3.8 × Human · height lined up end to end match the Saltwater crocodile · length (average large adult)
- ≈ 11 × Human · body mass on the scales weigh as much as Saltwater crocodile · mass
- ≈ 2.7–3.3 × Gorilla · standing height (adult male) lined up end to end match the Saltwater crocodile · length (average large adult)
- ≈ 6.7 × Gorilla · mass (adult male, average) on the scales weigh as much as Saltwater crocodile · mass
Counts divide one sourced figure by another. "End to end" uses each object's main measurement; weight and volume rows appear only when both figures are sourced.
How it compares
- 2.8–3.8× A saltwater crocodile is about 2.8–3.8 times as long as an average adult is tall. See side by side
- 2.7–3.3× A saltwater crocodile is about 2.7–3.3 times as long as a gorilla is tall. See side by side
- 3.3–4.1× A saltwater crocodile is about 3.3–4.1 times as long as a Holstein cow is tall at the shoulder. See side by side
- 4–5.7× A saltwater crocodile is about 4–5.7 times as long as an African lion is tall at the shoulder. See side by side
- 1–1.2× A saltwater crocodile is about as long as a mid-size car. See side by side
- 1/1.8–2.2 A school bus is about 1.8–2.2 times as long as a saltwater crocodile. See side by side
Factors compare the length (average large adult) of a saltwater crocodile with each object’s own main measurement (height for a human). Where a size varies, the factor is given as a range.
Notes on these figures
- San Diego Zoo's 16 to 20 ft 'average' and 2,000 lb weight describe large adults, not the species as a whole; females are much smaller.
- Queensland Museum gives a slightly different maximum ('up to 7 metres but rarely more than 5 metres') from the Northern Territory Government's 'males normally up to 6 metres'.
- The IUCN Crocodile Specialist Group account gives lengths but no weights.
Sources
- San Diego Zoo Wildlife Alliance, Crocodilian. Accessed 25 September 2026.
- Northern Territory Government (Be Crocwise), Saltwater crocodiles. Accessed 25 September 2026.
- Queensland Museum, Crocodiles - Animals of Queensland. Accessed 25 September 2026.
- IUCN SSC Crocodile Specialist Group, Saltwater Crocodile Crocodylus porosus (Webb, Manolis and Brien 2018), Crocodiles: Status Survey and Conservation Action Plan, Fourth Edition. Accessed 25 September 2026.