Snake Length Comparison (Meters)
What is the longest snake? Compare 15 snake maximum lengths in meters and feet, from green anaconda 8.43 m down to garter snake 1.30 m. All 15 rows verified.
Visual comparison
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| Name | Value | Context | Source |
|---|---|---|---|
| Green anaconda 8.43 m. Heaviest record 227 kg. Typical under 6.25. | 8.43 m (27.7 ft) | Eunectes murinus, South America | Natural History Museum London: heaviest anaconda 227 kg at 8.43 m; typical rarely over 6.25 m; Smithsonian National Zoo: up to 30 ft (9 m) reported |
| Reticulated python 7.22 m. Longest verified wild specimen 2026. | 7.22 m (23.7 ft) | Malayopython reticulatus, Southeast Asia | Guinness World Records 2026: longest wild snake 7.22 m female (Ibu Baron, Sulawesi); NHM: regularly over 6.25 m; 1912 10 m report noted as unverified |
| Indian python 6.40 m. Largest reliably reported. | 6.4 m (21 ft) | Python molurus, South Asia | Natural History Museum London snake size data: Indian python to 6.4 m |
| African rock python 6.00 m. Largest African snake. | 6 m (19.7 ft) | Python sebae, sub-Saharan Africa | Animal Diversity Web and reptile references: African rock python to 6 m |
| Burmese python 5.79 m. Florida record 19 ft. | 5.79 m (19 ft) | Python bivittatus, Southeast Asia | Florida Fish and Wildlife record: 19 ft (5.79 m) Burmese python |
| King cobra 5.71 m. Longest venomous snake. | 5.71 m (18.7 ft) | Ophiophagus hannah, Asia | Natural History Museum London: 1937 Malay specimen 5.54 m, grew to 5.71 m at London Zoo; Smithsonian National Zoo: to 18 ft (5.4 m), average 10-12 ft |
| Yellow anaconda 4.60 m. Smaller cousin of the green. | 4.6 m (15.1 ft) | Eunectes notaeus, South America | Animal Diversity Web: yellow anaconda to 4.6 m |
| Black mamba 4.50 m. Longest African venomous snake. | 4.5 m (14.8 ft) | Dendroaspis polylepis, Africa | Reptile references via Animal Diversity Web: black mamba to 4.5 m |
| Boa constrictor 4.00 m. Common pet trade giant. | 4 m (13.1 ft) | Boa constrictor, Americas | Smithsonian National Zoo boa data: to about 13 ft (4 m) |
| Olive python 4.00 m. Second largest Australian snake. | 4 m (13.1 ft) | Liasis olivaceus, Australia | Australian Museum: olive python to 4 m |
| Coastal taipan 2.90 m. Large Australian elapid. | 2.9 m (9.5 ft) | Oxyuranus scutellatus, Australia | Australian Museum: coastal taipan to 2.9 m |
| King brown snake 2.50 m. Often called mulga snake. | 2.5 m (8.2 ft) | Pseudechis australis, Australia | Australian Museum: king brown to 2.5 m |
| Eastern diamondback 2.40 m. Largest rattlesnake. | 2.4 m (7.9 ft) | Crotalus adamanteus, USA | Smithsonian and state herpetology references: eastern diamondback to 2.4 m |
| Corn snake 1.80 m. Common beginner pet snake. | 1.8 m (5.9 ft) | Pantherophis guttatus, USA | Animal Diversity Web: corn snake to 1.8 m |
| Common garter snake 1.30 m. Smallest row here. | 1.3 m (4.3 ft) | Thamnophis sirtalis, North America | Animal Diversity Web: garter snake to 1.3 m |
About this converter
Constrictors take the top rows. Green anaconda leads by record individual at 8.43 m and 227 kg, though typical wild adults stay under 6.25. Reticulated python follows at 7.22 on a verified 2026 wild measurement, ahead of Indian python 6.40, African rock python 6.00 and Burmese python 5.79. King cobra is the longest venomous snake at 5.71. Mid size rows run 4.00 to 4.60 with yellow anaconda, black mamba, boa constrictor and olive python. Small venomous rows close the table from 2.90 down to 1.30. One anaconda record matches over six eastern diamondbacks.
How to use it
Pick two snakes and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. Try 1 reticulated python against king cobras to see how the longest constrictor compares with the longest venomous snake.
Values are maximum reliably recorded lengths, not averages. The 1912 report of a 10 m reticulated python stays out as unverified, and the table pins the 7.22 m Guinness verified wild specimen with the old claim noted. Amethystine python stays out because published maxima span 6 to 8.5 m with no single agreed figure. Anaconda weight is noted where it sharpens a row.
FAQ
What is the longest snake in the world?
Reticulated python by verified wild measurement at 7.22 m in 2026. The 1912 claim of 10 m was never verified. Green anaconda is heavier at 227 kg but its record length is 8.43 m on one individual.
What is the longest venomous snake?
King cobra at 5.71 m on the London Zoo record. Average adults run 3 to 3.6 m.
Why not use the 10 meter python record?
It was never verified and later reviews found skins stretch and reports exaggerate. The table pins the 7.22 m verified specimen and notes the old claim.
Is the amethystine python included?
No. Published maxima span 6 to 8.5 m with no agreed figure, so it stays out rather than guessed at.
Sources
- Guinness World Records 2026: longest wild snake specimen (reticulated python 7.22 m, Sulawesi)
- Natural History Museum London: biggest snake in the world (reticulated over 6.25 m, anaconda 8.43 m at 227 kg, king cobra 5.71 m)
- Smithsonian National Zoo: green anaconda (to 30 ft) and king cobra (average 10-12 ft, to 18 ft) animal pages
- Australian Museum and Animal Diversity Web species pages (olive python, taipan, mamba, boa, colubrid maxima)
Last verified: 2026-10-02 · 15 entries
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