---
title: "black mamba vs Nile crocodile — size, speed and bite force"
description: "black mamba and Nile crocodile 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/black-mamba-vs-nile-crocodile/
site: "At One Place"
---

# black mamba vs Nile crocodile

**black mamba vs Nile crocodile: Nile crocodile leads on 3 of 3 measures**

Measured comparison — not a prediction

The fastest snake and Africa's longest venomous one; it is named for the black inside of its mouth, not its colour. Africa's largest crocodilian and, by most counts, the animal responsible for the most human deaths on the continent. On the measurements below, Nile crocodile 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

|  | black mamba | Nile crocodile |
| --- | --- | --- |
| Mass | 1–3.1 kg | 225–750 kg |
| Length | 2–4.3 m | 2.4–6 m |
| Top speed | 11–20 km/h | — |
| Lifespan | 10–20 yr | 45–80 yr |

## Where each one leads

- Mass: Nile crocodile is 219× heavier.
- Length: Nile crocodile is 1.6× longer.
- Lifespan: Nile crocodile is 4.5× 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 black mamba bigger than a Nile crocodile?

Nile crocodile is heavier — 225–750 kg against 1–3.1 kg.

### Who would win, a black mamba or a Nile crocodile?

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 black mamba weigh?](https://atoneplace.net/weight/black-mamba/)
- [How much does a Nile crocodile weigh?](https://atoneplace.net/weight/nile-crocodile/)
- [lion vs Nile crocodile](https://atoneplace.net/animal-vs/lion-vs-nile-crocodile/)
- [leopard vs Nile crocodile](https://atoneplace.net/animal-vs/leopard-vs-nile-crocodile/)
- [jaguar vs Nile crocodile](https://atoneplace.net/animal-vs/jaguar-vs-nile-crocodile/)
- [cheetah vs Nile crocodile](https://atoneplace.net/animal-vs/cheetah-vs-nile-crocodile/)
- [cougar vs Nile crocodile](https://atoneplace.net/animal-vs/cougar-vs-nile-crocodile/)
- [domestic cat vs Nile crocodile](https://atoneplace.net/animal-vs/domestic-cat-vs-nile-crocodile/)
- [grizzly bear vs Nile crocodile](https://atoneplace.net/animal-vs/grizzly-bear-vs-nile-crocodile/)
- [gray wolf vs Nile crocodile](https://atoneplace.net/animal-vs/gray-wolf-vs-nile-crocodile/)
- [coyote vs Nile crocodile](https://atoneplace.net/animal-vs/coyote-vs-nile-crocodile/)
- [honey badger vs Nile crocodile](https://atoneplace.net/animal-vs/honey-badger-vs-nile-crocodile/)
- [African elephant vs Nile crocodile](https://atoneplace.net/animal-vs/african-elephant-vs-nile-crocodile/)
- [African elephant vs black mamba](https://atoneplace.net/animal-vs/african-elephant-vs-black-mamba/)

## Sources

- Wikidata — Wikimedia Foundation (https://www.wikidata.org/) [CC0 1.0]
- Smithsonian National Museum of Natural History — Smithsonian Institution (https://naturalhistory.si.edu/)