---
title: "blue whale vs king cobra — size, speed and bite force"
description: "blue whale 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/blue-whale-vs-king-cobra/
site: "At One Place"
---

# blue whale vs king cobra

**blue whale vs king cobra: blue whale leads on 3 of 3 measures**

Measured comparison — not a prediction

The largest animal known to have lived, heavier than any dinosaur and audible to other whales hundreds of kilometres away. The longest venomous snake, delivering enough neurotoxin in one bite to kill an elephant. On the measurements below, blue whale 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

|  | blue whale | king cobra |
| --- | --- | --- |
| Mass | 50–190 t | 4–12.7 kg |
| Length | 21–33.6 m | 3–5.85 m |
| Top speed | 20–37 km/h | — |
| Lifespan | 70–90 yr | 17–22 yr |

## Where each one leads

- Mass: blue whale is 21667× heavier.
- Length: blue whale is 6.8× longer.
- Lifespan: blue whale is 4.0× 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 blue whale bigger than a king cobra?

blue whale is heavier — 50–190 t against 4–12.7 kg.

### Who would win, a blue whale 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 blue whale weigh?](https://atoneplace.net/weight/blue-whale/)
- [How much does a king cobra weigh?](https://atoneplace.net/weight/king-cobra/)
- [domestic cat vs king cobra](https://atoneplace.net/animal-vs/domestic-cat-vs-king-cobra/)
- [American black bear vs blue whale](https://atoneplace.net/animal-vs/american-black-bear-vs-blue-whale/)
- [giant panda vs king cobra](https://atoneplace.net/animal-vs/giant-panda-vs-king-cobra/)
- [African elephant vs blue whale](https://atoneplace.net/animal-vs/african-elephant-vs-blue-whale/)
- [African elephant vs king cobra](https://atoneplace.net/animal-vs/african-elephant-vs-king-cobra/)
- [Asian elephant vs blue whale](https://atoneplace.net/animal-vs/asian-elephant-vs-blue-whale/)
- [Asian elephant vs king cobra](https://atoneplace.net/animal-vs/asian-elephant-vs-king-cobra/)
- [black rhinoceros vs blue whale](https://atoneplace.net/animal-vs/black-rhinoceros-vs-blue-whale/)
- [American bison vs blue whale](https://atoneplace.net/animal-vs/american-bison-vs-blue-whale/)
- [blue whale vs lion](https://atoneplace.net/animal-vs/blue-whale-vs-lion/)
- [blue whale vs tiger](https://atoneplace.net/animal-vs/blue-whale-vs-tiger/)
- [blue whale vs leopard](https://atoneplace.net/animal-vs/blue-whale-vs-leopard/)

## Sources

- National Oceanic and Atmospheric Administration — NOAA (https://www.noaa.gov/) [Public domain (US Government)]
- Smithsonian National Museum of Natural History — Smithsonian Institution (https://naturalhistory.si.edu/)