---
title: "How much does a sea otter weigh?"
description: "A sea otter weighs 14–45 kg (30.9–99.2 lb). How that compares to other things, and where the number comes from."
url: https://atoneplace.net/weight/sea-otter/
site: "At One Place"
---

# How much does a sea otter weigh?

**Typical weight: 14–45 kg**

That is 30.9–99.2 lb.

The heaviest mustelid, insulated by the densest fur of any animal rather than by blubber.

> Males 22-45 kg; females 14-33 kg.

## How that compares

*Sea otter against things of a similar mass.*

- Sea otter: 14–45 kg
- Air conditioner: 15–60 kg
- Labrador retriever: 25–36 kg
- Emperor penguin: 22–45 kg
- Golden retriever: 25–34 kg
- Air compressor: 12–170 kg
- Rowing machine: 20–45 kg
- Radiator: 10–100 kg

## More about a sea otter

- [How long does a sea otter last?](https://atoneplace.net/how-long/sea-otter/) — 10–23 yr

## Common questions

### How much does a sea otter weigh?

A sea otter weighs 14–45 kg (30.9–99.2 lb). Males 22-45 kg; females 14-33 kg.

## Related pages

- [How long does a sea otter last?](https://atoneplace.net/how-long/sea-otter/)
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- [How much does a gorilla weigh?](https://atoneplace.net/weight/gorilla/)

## Sources

- National Oceanic and Atmospheric Administration — NOAA (https://www.noaa.gov/) [Public domain (US Government)]