---
title: "green anaconda vs king cobra — size, speed and bite force"
description: "green anaconda and king cobra compared on mass, length, speed, bite force and lifespan — every measure side by side, with why the numbers cannot settle an encounter."
url: https://atoneplace.net/animal-vs/green-anaconda-vs-king-cobra/
site: "At One Place"
---

# green anaconda vs king cobra

**green anaconda vs king cobra: green anaconda leads on 2 of 3 measures**

Measured comparison — not a prediction

The heaviest snake in the world, though the reticulated python grows longer. The longest venomous snake, delivering enough neurotoxin in one bite to kill an elephant. On the measurements below, green anaconda leads on more of them — but they do not all point the same way, and the ones that disagree are the interesting part.

## The measurements

|  | green anaconda | king cobra |
| --- | --- | --- |
| Mass | 30–227 kg | 4–12.7 kg |
| Length | 3–8.8 m | 3–5.85 m |
| Lifespan | 10–30 yr | 17–22 yr |

## Where each one leads

- Mass: green anaconda is 10× heavier.
- Length: green anaconda is 1.2× longer.
- Lifespan: king cobra is 2.0× a longer life.

## What this does and does not tell you

These are measured averages with real ranges behind them, and every figure links to its own page. What they cannot do is settle an encounter. Outcomes between animals turn on circumstance — who initiates, whether either is hungry, defending young, injured or cornered, and what the terrain favours. Size and bite force are not decisive on their own, and most of these pairs never meet in the wild in any case, because their ranges do not overlap.

> Every figure here is an average with a substantial spread. Individual animals vary enormously — a large individual of the smaller species routinely exceeds a small individual of the larger one.

## Common questions

### Is a green anaconda bigger than a king cobra?

green anaconda is heavier — 30–227 kg against 4–12.7 kg.

### Who would win, a green anaconda or a king cobra?

That is not something measurements can settle. The comparison above shows which animal leads on each measure, but an actual encounter depends on circumstance, motivation, health and terrain — and most pairs like this never meet in the wild.

## Related pages

- [How much does a green anaconda weigh?](https://atoneplace.net/weight/green-anaconda/)
- [How much does a king cobra weigh?](https://atoneplace.net/weight/king-cobra/)
- [cheetah vs green anaconda](https://atoneplace.net/animal-vs/cheetah-vs-green-anaconda/)
- [cougar vs green anaconda](https://atoneplace.net/animal-vs/cougar-vs-green-anaconda/)
- [domestic cat vs green anaconda](https://atoneplace.net/animal-vs/domestic-cat-vs-green-anaconda/)
- [domestic cat vs king cobra](https://atoneplace.net/animal-vs/domestic-cat-vs-king-cobra/)
- [giant panda vs king cobra](https://atoneplace.net/animal-vs/giant-panda-vs-king-cobra/)
- [gray wolf vs green anaconda](https://atoneplace.net/animal-vs/gray-wolf-vs-green-anaconda/)
- [coyote vs green anaconda](https://atoneplace.net/animal-vs/coyote-vs-green-anaconda/)
- [African elephant vs green anaconda](https://atoneplace.net/animal-vs/african-elephant-vs-green-anaconda/)
- [African elephant vs king cobra](https://atoneplace.net/animal-vs/african-elephant-vs-king-cobra/)
- [Asian elephant vs king cobra](https://atoneplace.net/animal-vs/asian-elephant-vs-king-cobra/)
- [blue whale vs green anaconda](https://atoneplace.net/animal-vs/blue-whale-vs-green-anaconda/)
- [blue whale vs king cobra](https://atoneplace.net/animal-vs/blue-whale-vs-king-cobra/)

## Sources

- Smithsonian National Museum of Natural History — Smithsonian Institution (https://naturalhistory.si.edu/)