---
title: "Black mamba vs platypus — size, weight and speed compared"
description: "Black mamba is somewhat greater than platypus on weight — about 1.1×. Compared on 3 measured properties, with the full range and a source for each."
url: https://atoneplace.net/vs/black-mamba-vs-platypus/
site: "At One Place"
---

# Black mamba vs Platypus

**Black mamba vs platypus: Black mamba is larger on weight**

Black mamba is somewhat greater than platypus on weight — about 1.1×.

A black mamba and a platypus can be compared on 3 measures. The figures below are typical adult or full-size values, with the larger of the two in bold.

## Side by side

*Larger value in bold. Ranges reflect genuine variation, not uncertainty.*

|  | Black mamba | Platypus |
| --- | --- | --- |
| Weight | 1–3.1 kg | 0.7–2.4 kg |
| Length | 2–4.3 m | 0.38–0.6 m |
| Typical lifespan | 10–20 yr | 11–21 yr |

## What the numbers say

- Black mamba is somewhat greater than platypus on weight — about 1.1×.
- Black mamba is 5.6× platypus on length.
- Platypus is somewhat greater than black mamba on typical lifespan — about 1.1×.

*Weight compared.*

- Black mamba: 1–3.1 kg
- Platypus: 0.7–2.4 kg

## Black mamba

The fastest snake and Africa's longest venomous one; it is named for the black inside of its mouth, not its colour.

## Platypus

An egg-laying mammal that hunts by electroreception; males carry venomous spurs on their hind legs.

> This is a comparison of published measurements, nothing more. It describes how two things differ on measures that have been recorded; it does not predict how they would fare against each other in any situation.

## Common questions

### Which is bigger, black mamba or platypus?

Black mamba is somewhat greater than platypus on weight — about 1.1×. Both figures are typical values; the full range for each is in the table above.

### How do black mambas and platypuses compare on length?

Black mamba: 2–4.3 m. Platypus: 0.38–0.6 m. Black mamba is 5.6× platypus on length.

### How do black mambas and platypuses compare on typical lifespan?

Black mamba: 10–20 yr. Platypus: 11–21 yr. Platypus is somewhat greater than black mamba on typical lifespan — about 1.1×.

## Related pages

- [Black mamba vs peregrine falcon](https://atoneplace.net/vs/black-mamba-vs-peregrine-falcon/)
- [Black mamba vs mallard](https://atoneplace.net/vs/black-mamba-vs-mallard/)
- [Black mamba vs king cobra](https://atoneplace.net/vs/black-mamba-vs-king-cobra/)

## Sources

- Wikidata — Wikimedia Foundation (https://www.wikidata.org/) [CC0 1.0]